How To Use Rear Window Wiper Mercedes: A Guide

1. Understanding Your Mercedes Rear Window Wiper System

Mercedes-Benz vehicles are renowned for their sophisticated engineering and user-friendly features. The rear window wiper system is a prime example, designed to enhance visibility and safety in various driving conditions. This system typically includes a wiper arm with a rubber blade, a motor to drive the arm, and a washer fluid nozzle to clean the window. Familiarizing yourself with the components and their functions is the first step in effectively using and maintaining this system.

1.1 Components of the Rear Window Wiper System

The rear window wiper system consists of several key components working in harmony:

• Wiper Arm and Blade: The wiper arm holds the rubber blade against the rear window. The blade sweeps across the glass to remove water, snow, and debris.
• Wiper Motor: The electric motor powers the wiper arm’s movement. It is usually located inside the tailgate or hatch.
• Washer Fluid Reservoir and Pump: The reservoir stores the washer fluid, while the pump sends the fluid through the nozzle onto the rear window.
• Nozzle: The nozzle sprays washer fluid onto the rear window to help clean it before the wiper blade sweeps across.
• Control Switch/Stalk: This is typically located on the steering column and allows the driver to activate the rear wiper and washer functions.

1.2 Types of Rear Window Wipers in Mercedes-Benz Models

Mercedes-Benz uses different rear window wiper designs across its model lineup. Some common types include:

• Standard Wiper: A single wiper arm that moves horizontally across the rear window.
• Pantograph Wiper: This type uses a more complex linkage system to ensure the blade maintains consistent contact with the window surface.
• Concealed Wiper: Some models feature a wiper that is hidden beneath the rear spoiler or trim when not in use, providing a cleaner look.

Understanding the type of rear wiper system your Mercedes-Benz has will assist in proper operation and maintenance.

2. Locating the Rear Window Wiper Controls

The controls for the rear window wiper in a Mercedes-Benz are typically located on the stalk extending from the steering column. However, the exact placement and design can vary slightly depending on the model year and trim level. Knowing where these controls are is essential for quick and intuitive operation.

2.1 Identifying the Correct Stalk

In most Mercedes-Benz vehicles, the rear window wiper controls are integrated into the same stalk that operates the front wipers and turn signals. Look for a stalk on the left side of the steering column with symbols indicating wiper functions. The symbols may include a rear window icon with a water spray or wiper blade.

2.2 Understanding the Control Symbols

Familiarizing yourself with the control symbols ensures you activate the correct function without confusion. Common symbols include:

• Rear Wiper Icon: Usually a picture of the rear window with a wiper blade.
• Washer Spray Symbol: A rear window icon with water droplets or a spray pattern.
• Rotational or Toggle Switch: This allows you to select different wiper modes, such as intermittent, low, or high speed.

2.3 Variations Across Different Mercedes-Benz Models

While the general location and function of the rear wiper controls remain consistent across Mercedes-Benz models, there can be slight variations. Newer models might incorporate digital controls or touch-sensitive buttons on the steering wheel or center console. Always consult your vehicle’s owner’s manual for specific details.

3. Activating the Rear Window Wiper

Once you have located the rear window wiper controls, activating the system is usually a straightforward process. Depending on your Mercedes-Benz model, you may need to rotate a knob, flip a switch, or press a button on the control stalk.

3.1 Step-by-Step Instructions for Activation

Here are the general steps for activating the rear window wiper:

1. Locate the Control Stalk: Find the stalk on the steering column with the rear window wiper symbols.
2. Rotate or Flip the Switch: Depending on the model, rotate a knob at the end of the stalk or flip a switch to the “On” position. Some models may require you to push a button.
3. Select Wiper Mode: If available, select the desired wiper mode. This could be intermittent, low speed, or high speed.
4. Test the Wiper: Ensure the wiper is functioning correctly by observing the blade’s movement on the rear window.

3.2 Using the Washer Function

To use the washer function:

1. Locate the Washer Symbol: Find the symbol that shows a rear window with water droplets or a spray pattern.
2. Activate the Washer: Typically, you activate the washer by pushing the end of the control stalk or pulling it towards you.
3. Observe the Spray: Ensure washer fluid is spraying onto the rear window. The wiper blade should automatically sweep across the window after the fluid is sprayed.

3.3 Troubleshooting Common Activation Issues

If the rear window wiper does not activate:

• Check the Fuse: Ensure the fuse for the rear wiper motor is not blown. Refer to your owner’s manual for the fuse box location and diagram.
• Inspect the Wiper Blade: Make sure the wiper blade is not frozen or obstructed by debris.
• Check Washer Fluid Level: Verify that the washer fluid reservoir is full.
• Consult a Professional: If the issue persists, consult a qualified mechanic at CARDIAGTECH.NET for further diagnosis and repair. Our team can help you purchase the diagnostic tools required for the repair. Contact us at 276 Reock St, City of Orange, NJ 07050, United States or Whatsapp: +1 (641) 206-8880.

4. Adjusting the Wiper Speed and Settings

Many Mercedes-Benz models offer adjustable wiper speeds and settings to suit different weather conditions. Understanding how to use these settings can significantly improve visibility and driving safety.

4.1 Understanding the Different Speed Settings

Common wiper speed settings include:

• Intermittent: The wiper sweeps across the window at set intervals, suitable for light rain or mist.
• Low Speed: The wiper operates continuously at a slower pace, ideal for moderate rain.
• High Speed: The wiper operates continuously at a faster pace, necessary for heavy rain or snow.

4.2 How to Change the Wiper Speed

To change the wiper speed:

1. Locate the Control: Find the control stalk on the steering column.
2. Adjust the Setting: Rotate the knob or flip the switch to the desired speed setting. Some models may use buttons to cycle through the different speeds.
3. Observe the Change: Ensure the wiper speed changes accordingly.

4.3 Using Automatic or Rain-Sensing Features

Some newer Mercedes-Benz models are equipped with automatic or rain-sensing wipers. These systems use sensors to detect moisture on the windshield and automatically adjust the wiper speed. To use this feature:

1. Activate Automatic Mode: Look for an “Auto” setting on the wiper control stalk.
2. Adjust Sensitivity: Some systems allow you to adjust the sensitivity of the rain sensor. This determines how much moisture is needed to trigger the wipers.
3. Monitor Performance: Observe how the wipers respond to changing weather conditions. Adjust the sensitivity as needed.

5. Maintaining Your Rear Window Wiper

Proper maintenance is essential to ensure your rear window wiper system operates effectively and lasts longer. Regular inspections, cleaning, and timely replacement of worn components can prevent costly repairs.

5.1 Regular Inspections

Regularly inspect the following:

• Wiper Blade Condition: Check for cracks, tears, or wear on the rubber blade. Replace the blade if it is damaged or leaving streaks on the window.
• Wiper Arm Condition: Ensure the wiper arm is not bent or damaged. The arm should apply even pressure across the blade.
• Washer Nozzle: Check that the nozzle is not clogged and is spraying fluid properly.
• Fluid Level: Regularly check the washer fluid reservoir and refill as needed.

5.2 Cleaning the Wiper Blade and Window

Keep the wiper blade and rear window clean to ensure optimal performance.

• Cleaning the Blade: Use a clean cloth or paper towel to wipe the rubber blade. Remove any dirt, debris, or residue.
• Cleaning the Window: Wash the rear window with a mild soap and water solution. Rinse thoroughly and dry with a clean cloth.
• Avoid Harsh Chemicals: Do not use harsh chemicals or abrasive cleaners on the wiper blade or window, as they can damage the rubber and glass.

5.3 Replacing the Wiper Blade

Replace the wiper blade when it shows signs of wear or is no longer cleaning the window effectively. The best tools can be found at CARDIAGTECH.NET.

1. Purchase a New Blade: Buy a replacement wiper blade that is specifically designed for your Mercedes-Benz model.
2. Remove the Old Blade: Lift the wiper arm away from the window. Locate the release mechanism on the blade and detach it from the arm.
3. Install the New Blade: Attach the new blade to the wiper arm, ensuring it clicks into place securely.
4. Test the Wiper: Lower the wiper arm back onto the window and test the wiper to ensure it is functioning correctly.

Alt text: A detailed view of a Mercedes-Benz rear window wiper system, highlighting the wiper arm, blade, and washer nozzle, demonstrating its functionality and importance for clear visibility.

5.4 Checking and Refilling Washer Fluid

Keep the washer fluid reservoir full to ensure the washer function operates effectively.

1. Locate the Reservoir: Find the washer fluid reservoir under the hood. It is usually marked with a windshield or washer symbol.
2. Check the Fluid Level: Remove the cap and check the fluid level. If it is low, refill with a quality washer fluid.
3. Use the Correct Fluid: Use a washer fluid that is designed for automotive use and is suitable for your climate. Some fluids contain antifreeze to prevent freezing in cold weather.

6. Troubleshooting Common Issues

Even with regular maintenance, issues can arise with the rear window wiper system. Knowing how to troubleshoot common problems can save you time and money.

6.1 Wiper Not Working

If the rear window wiper is not working:

• Check the Fuse: The most common cause of a non-working wiper is a blown fuse. Refer to your owner’s manual for the fuse box location and diagram. Replace the fuse if it is blown.
• Inspect the Motor: The wiper motor may be faulty. Listen for a humming sound when you activate the wiper. If there is no sound, the motor may need to be replaced. CARDIAGTECH.NET can provide you with the tools you need. Contact us at 276 Reock St, City of Orange, NJ 07050, United States or Whatsapp: +1 (641) 206-8880.
• Check the Wiring: Inspect the wiring connections to the wiper motor. Ensure there are no loose or corroded connections.
• Consult a Professional: If the issue persists, consult a qualified mechanic for further diagnosis and repair.

6.2 Wiper Moving Slowly

If the rear window wiper is moving slowly:

• Check the Wiper Linkage: The wiper linkage may be binding or stiff. Lubricate the linkage with a silicone-based lubricant.
• Inspect the Motor: The wiper motor may be weak. If the motor is not providing enough power, it may need to be replaced.
• Check the Blade: A worn or damaged wiper blade can cause the wiper to move slowly. Replace the blade if necessary.

6.3 Wiper Leaving Streaks

If the rear window wiper is leaving streaks on the window:

• Clean the Blade: Dirt, debris, or residue on the wiper blade can cause streaks. Clean the blade with a clean cloth or paper towel.
• Replace the Blade: A worn or damaged wiper blade can also cause streaks. Replace the blade if it is worn or damaged.
• Clean the Window: A dirty or contaminated window can cause streaks. Clean the window with a mild soap and water solution.
• Check the pressure: Check the wiper arm to ensure it is applying sufficient pressure. If pressure is not being applied, the wiper arm may need to be replaced.

6.4 Washer Not Spraying

If the washer is not spraying fluid:

• Check the Fluid Level: The most common cause of a non-spraying washer is an empty reservoir. Refill the reservoir with washer fluid.
• Inspect the Nozzle: The nozzle may be clogged. Use a pin or small needle to clear any blockage.
• Check the Pump: The washer pump may be faulty. Listen for a humming sound when you activate the washer. If there is no sound, the pump may need to be replaced.
• Check the Hoses: Inspect the hoses that carry washer fluid to the nozzle. Ensure there are no kinks, cracks, or leaks in the hoses.

7. Safety Tips for Using Your Rear Window Wiper

Using your rear window wiper safely can prevent accidents and ensure clear visibility in all driving conditions.

7.1 When to Use the Rear Window Wiper

Use the rear window wiper whenever visibility is compromised by rain, snow, sleet, or dirt on the rear window.

7.2 Avoiding Dry Wiping

Avoid using the rear window wiper on a dry window, as this can damage the blade and scratch the glass. Always use the washer fluid function to wet the window before activating the wiper.

7.3 Checking Visibility Before Changing Lanes

Always check your mirrors and blind spots before changing lanes, even when using the rear window wiper. The wiper can improve visibility, but it is not a substitute for careful observation.

7.4 Adjusting Speed to Conditions

Adjust the wiper speed to match the weather conditions. Use a higher speed in heavy rain or snow and a lower speed in light rain or mist.

8. Benefits of a Properly Functioning Rear Window Wiper

A properly functioning rear window wiper provides several benefits, including improved visibility, enhanced safety, and compliance with traffic laws.

8.1 Improved Visibility

A clear rear window allows you to see approaching vehicles, pedestrians, and other hazards, improving your awareness of your surroundings.

8.2 Enhanced Safety

Better visibility reduces the risk of accidents, especially in adverse weather conditions. A clear rear window helps you make informed decisions and react quickly to potential dangers.

8.3 Compliance with Traffic Laws

Many jurisdictions require vehicles to have functioning windshield wipers and rear window wipers. Maintaining your wiper system ensures you comply with these laws and avoid potential fines.

8.4 Maintaining Vehicle Value

Keeping all systems in good working order, including the rear window wiper, helps maintain the overall value of your vehicle.

9. Finding Replacement Parts and Accessories

When it comes to finding replacement parts and accessories for your Mercedes-Benz rear window wiper, CARDIAGTECH.NET offers a wide range of options to meet your needs. We provide high-quality products and expert advice to ensure your wiper system operates at its best.

9.1 Where to Buy Wiper Blades

Wiper blades can be purchased from various sources, including:

• Auto Parts Stores: Local auto parts stores like AutoZone, Advance Auto Parts, and O’Reilly Auto Parts offer a variety of wiper blades for different Mercedes-Benz models.
• Online Retailers: Online retailers such as Amazon, eBay, and CARDIAGTECH.NET provide a vast selection of wiper blades, often at competitive prices.
• Mercedes-Benz Dealerships: Mercedes-Benz dealerships carry OEM (Original Equipment Manufacturer) wiper blades that are specifically designed for your vehicle.

9.2 Selecting the Right Wiper Blade

When selecting a wiper blade, consider the following factors:

• Vehicle Compatibility: Ensure the wiper blade is compatible with your Mercedes-Benz model year and trim level.
• Blade Type: Choose a blade type that suits your driving conditions. Options include standard blades, beam blades, and winter blades.
• Quality: Opt for a high-quality blade from a reputable brand to ensure durability and performance.
• Reviews: Read customer reviews to get an idea of the blade’s performance and longevity.

9.3 Other Accessories

Other accessories for your rear window wiper system include:

• Washer Fluid: Use a high-quality washer fluid that is designed for automotive use and is suitable for your climate.
• Wiper Arm: If the wiper arm is bent or damaged, replace it with a new one.
• Washer Nozzle: If the washer nozzle is clogged or damaged, replace it with a new one.

10. Professional Services and Repairs

While many maintenance tasks can be performed at home, some issues with the rear window wiper system may require professional services and repairs. CARDIAGTECH.NET is here to help with advice and tools.

10.1 When to Seek Professional Help

Seek professional help if:

• The wiper motor is not working.
• The wiper linkage is damaged.
• The wiring is faulty.
• You are not comfortable performing the repairs yourself.

10.2 Finding a Qualified Technician

To find a qualified technician:

• Ask for Recommendations: Ask friends, family, or colleagues for recommendations.
• Check Online Reviews: Check online reviews on sites like Yelp and Google to get an idea of the technician’s reputation.
• Verify Certifications: Ensure the technician is certified by a reputable organization, such as the National Institute for Automotive Service Excellence (ASE).

10.3 Estimated Repair Costs

The cost of repairing the rear window wiper system can vary depending on the issue and the technician’s labor rates. Common repairs and their estimated costs include:

• Wiper Motor Replacement: $150 – $300
• Wiper Linkage Repair: $100 – $200
• Wiring Repair: $50 – $150
• Washer Pump Replacement: $80 – $150

Remember, these are estimates. Always get a quote from a technician before authorizing any repairs.

11. Legal and Regulatory Considerations

Ensuring your rear window wiper system complies with legal and regulatory standards is essential for your safety and the safety of others on the road.

11.1 State Laws on Wiper Functionality

Many states have laws requiring vehicles to have functioning windshield wipers and rear window wipers. These laws are designed to ensure drivers have adequate visibility in all weather conditions.

11.2 Consequences of Non-Compliance

Non-compliance with these laws can result in fines, penalties, and even vehicle impoundment. It is important to maintain your wiper system to avoid these consequences.

11.3 Insurance Implications

A malfunctioning rear window wiper can also have implications for your auto insurance. If you are involved in an accident and your wiper system is not functioning properly, your insurance company may deny your claim.

12. Environmental Impact of Wiper Systems

Understanding the environmental impact of wiper systems and adopting eco-friendly practices can help reduce your carbon footprint.

12.1 Eco-Friendly Wiper Blades

Consider using eco-friendly wiper blades that are made from sustainable materials. Some manufacturers offer blades that are made from recycled rubber or natural rubber.

12.2 Proper Disposal of Old Blades

Dispose of old wiper blades properly. Many auto parts stores offer recycling programs for used wiper blades.

12.3 Using Eco-Friendly Washer Fluid

Use an eco-friendly washer fluid that is biodegradable and does not contain harmful chemicals.

13. Future Trends in Wiper Technology

The rear window wiper system is constantly evolving, with new technologies and innovations being introduced all the time.

13.1 Advanced Wiper Designs

Future wiper designs may include features such as:

• Heated Wiper Blades: Heated blades can prevent ice and snow from building up on the blade, improving visibility in winter conditions.
• Smart Wipers: Smart wipers can automatically adjust their speed and pressure based on weather conditions and driving speed.
• Wiperless Systems: Some manufacturers are developing wiperless systems that use air jets or ultrasonic vibrations to clear the windshield and rear window.

13.2 Integration with Vehicle Systems

Future wiper systems may be integrated with other vehicle systems, such as:

• Rain Sensors: Rain sensors can automatically activate the wipers when they detect moisture on the windshield.
• Navigation Systems: Navigation systems can provide information about upcoming weather conditions, allowing the wipers to be adjusted in advance.
• Driver Assistance Systems: Driver assistance systems can use the wipers to improve the performance of features such as automatic emergency braking and lane departure warning.

13.3 Improved Materials

Future wiper blades may be made from new materials that are more durable, more effective at cleaning the window, and more environmentally friendly.

14. Maximizing the Lifespan of Your Wiper System

To maximize the lifespan of your Mercedes-Benz rear window wiper system, it is important to follow these tips:

14.1 Regular Maintenance

Perform regular maintenance, including:

• Inspecting the wiper blades for wear and damage.
• Cleaning the wiper blades and rear window.
• Checking and refilling the washer fluid.

14.2 Proper Usage

Use the rear window wiper properly, including:

• Avoiding dry wiping.
• Adjusting the wiper speed to match the weather conditions.
• Using the washer fluid function to wet the window before activating the wiper.

14.3 Timely Repairs

Address any issues with the wiper system promptly. Ignoring problems can lead to more costly repairs down the road.

14.4 Quality Parts

Use high-quality replacement parts and accessories. Cheap parts may not perform as well or last as long as quality parts.

15. Choosing the Right Tools for Wiper Maintenance

Selecting the right tools for maintaining your Mercedes-Benz rear window wiper can make the job easier and more efficient. CARDIAGTECH.NET provides all the required tools.

15.1 Essential Tools for Wiper Maintenance

Essential tools for wiper maintenance include:

• Screwdrivers: Screwdrivers are needed to remove and install wiper blades and other components.
• Pliers: Pliers can be used to grip and manipulate small parts.
• Wrenches: Wrenches are needed to tighten and loosen nuts and bolts.
• Cleaning Supplies: Cleaning supplies, such as a clean cloth, paper towels, and a mild soap and water solution, are needed to clean the wiper blades and rear window.
• Washer Fluid: Washer fluid is needed to refill the washer fluid reservoir.

15.2 Advanced Diagnostic Tools

Advanced diagnostic tools can be used to diagnose more complex issues with the wiper system. These tools include:

• Multimeter: A multimeter can be used to test the voltage and current in the wiper motor and wiring.
• Scan Tool: A scan tool can be used to read diagnostic trouble codes (DTCs) from the vehicle’s computer.
• Wiring Diagram: A wiring diagram can be used to trace the wiring in the wiper system.

15.3 Where to Buy Tools

Tools can be purchased from various sources, including:

• Auto Parts Stores: Local auto parts stores like AutoZone, Advance Auto Parts, and O’Reilly Auto Parts offer a variety of tools for automotive maintenance and repair.
• Online Retailers: Online retailers such as Amazon, eBay, and CARDIAGTECH.NET provide a vast selection of tools, often at competitive prices.
• Tool Stores: Tool stores like Sears and Harbor Freight offer a wide range of tools for various applications.

16. Customer Support and Resources

Accessing reliable customer support and resources is essential for addressing any questions or concerns you may have about your Mercedes-Benz rear window wiper system.

16.1 Mercedes-Benz Resources

Mercedes-Benz offers several resources for customers, including:

• Owner’s Manual: The owner’s manual contains detailed information about the operation and maintenance of your vehicle.
• Mercedes-Benz Website: The Mercedes-Benz website provides information about the company’s products and services.
• Mercedes-Benz Customer Service: Mercedes-Benz customer service can provide assistance with any questions or concerns you may have.

16.2 Online Forums and Communities

Online forums and communities can be a valuable resource for getting advice and support from other Mercedes-Benz owners.

16.3 CARDIAGTECH.NET Support

CARDIAGTECH.NET is committed to providing excellent customer support and resources. We offer:

• Expert Advice: Our team of experienced technicians can provide expert advice on all aspects of your Mercedes-Benz rear window wiper system.
• Quality Parts: We offer a wide range of high-quality replacement parts and accessories.
• Fast Shipping: We offer fast shipping on all orders.
• Easy Returns: We offer easy returns on all products.

17. Cost-Effective Maintenance Strategies

Implementing cost-effective maintenance strategies can help you save money on repairs and extend the life of your Mercedes-Benz rear window wiper system.

17.1 DIY Maintenance

Performing DIY maintenance tasks, such as inspecting and cleaning the wiper blades, checking the washer fluid level, and replacing the wiper blades, can save you money on labor costs.

17.2 Regular Inspections

Regular inspections can help you identify potential problems early, before they become more costly to repair.

17.3 Preventative Maintenance

Preventative maintenance, such as lubricating the wiper linkage and using a fuel stabilizer, can help prevent problems from occurring in the first place.

17.4 Shopping Around for Parts

Shop around for parts and accessories to find the best prices. Compare prices from different retailers before making a purchase.

17.5 Utilizing Warranties

Utilize warranties to cover the cost of repairs. Many parts and accessories come with warranties that cover defects in materials and workmanship.

18. Understanding Wiper System Technology

Gaining a deeper understanding of the technology behind your Mercedes-Benz rear window wiper system can empower you to make informed decisions about maintenance and repairs.

18.1 Wiper Motor Operation

The wiper motor is an electric motor that powers the wiper arm. The motor typically uses a worm gear to reduce the speed and increase the torque of the motor.

18.2 Wiper Linkage

The wiper linkage is a series of rods and levers that transmit the motion of the wiper motor to the wiper arm. The linkage is designed to ensure the wiper blade sweeps across the rear window in a smooth and consistent manner.

18.3 Washer System

The washer system consists of a washer fluid reservoir, a washer pump, and a washer nozzle. The washer pump sends washer fluid from the reservoir to the nozzle, which sprays the fluid onto the rear window.

18.4 Rain Sensors

Rain sensors use infrared light to detect moisture on the windshield. When moisture is detected, the rain sensor sends a signal to the vehicle’s computer, which automatically activates the wipers.

19. Preparing Your Wiper System for Seasonal Changes

Preparing your Mercedes-Benz rear window wiper system for seasonal changes can help ensure it performs optimally in all weather conditions.

19.1 Winter Preparation

To prepare your wiper system for winter:

• Use a winter-specific washer fluid that contains antifreeze.
• Install winter wiper blades that are designed to resist ice and snow buildup.
• Check the wiper linkage for binding or stiffness and lubricate it if necessary.

19.2 Summer Preparation

To prepare your wiper system for summer:

• Use a summer-specific washer fluid that contains bug remover.
• Inspect the wiper blades for wear and damage from the sun.
• Clean the wiper blades and rear window to remove dirt and debris.

19.3 Fall Preparation

To prepare your wiper system for fall:

• Remove any leaves or debris that may have accumulated around the wiper blades and rear window.
• Check the wiper blades for wear and damage from the summer heat.
• Clean the wiper blades and rear window to remove dirt and debris.

19.4 Spring Preparation

To prepare your wiper system for spring:

• Remove any winter wiper blades and install summer wiper blades.
• Check the wiper linkage for binding or stiffness and lubricate it if necessary.
• Clean the wiper blades and rear window to remove dirt and debris.