Mercedes GL Series W166 Wiper and Glass Systems

Packaging and Delivery
The Wiper and Glass Systems set designed for the GL Series W166 (2011–2015) is packaged in impact-resistant foam interlayer and compartmentalized special boxes. All components of the Wiper and Glass Systems—front/rear wiper arms and blades, glass seals, glass lift mechanisms, glass opening button modules, water spray hoses, and connection fittings—are secured in special compartments. This packaging design ensures that your Wiper and Glass Systems parts are protected from vibration, impact, and moisture during shipping. Delivery across Turkey within 24–48 hours, live cargo tracking, and cash on delivery options make your Wiper and Glass Systems shopping both safe and practical.

Warranty and Return Conditions
We offer a 2-year warranty for the original OEM parts in our Wiper and Glass Systems set and a 1-year warranty for aftermarket alternatives. The warranty covers the following situations under Wiper and Glass Systems:

• Manufacturing Defects and Material Flaws (seal deformation, lift mechanism failure, button contact issues)

• Shipping Damages (packaging deformations, part scratches or dents)

• Incorrect Part Shipment (wrong Wiper and Glass Systems components based on your chassis number)

For return requests, it is sufficient to have the original packaging, invoice, and part labels intact. You can use your right to free return or exchange within 14 days from the delivery date, including Wiper and Glass Systems sets purchased with cash on delivery. After return approval, our cargo company will pick up the Wiper and Glass Systems package from your address and quickly deliver a new one.

After-Sales Technical Support
Our technical support line, available 24/7 for GL Series W166 owners, is here to assist you during the installation and commissioning process of the Wiper and Glass Systems. Our expert team:

• Confirms the correct Wiper and Glass Systems codes by checking your vehicle's chassis number (VIN),

• Glass seal replacement, glass lift installation, glass opening button fitting, and wiper arms/blade installation steps are guided with screen sharing or phone support,

• Assists with post-installation water tightness checks, button function tests, wiper speed adjustments, and reading glass motor fault codes via OBD (e.g., U1274).

This comprehensive support guarantees the smooth operation and long-lasting performance of your Wiper and Glass Systems set.

Set Contents and Technical Specifications

Wiper and Glass Systems set includes:

1. Wiper Components

   • Front/Rear Wiper Arms: Metal alloy, corrosion-resistant; original length and angle tolerances.

   • Wiper Rubber Seals: High heat and UV resistant rubber; clean and quiet wiper performance.

   • Wiper Motor & Gear Set: 12 V low noise, vibration-free operation with optimized gear ratio.

   • Pivot Cover and Nuts: Waterproof cover, nut set at original torque values.

2. Glass System Parts

   • Door Glass Seals: Upper and lower seals; EPDM rubber, waterproof and dustproof.

   • Glass Lift Mechanism: Closed gear structure, metal alloy gear group that does not require lubrication.

   • Glass Opening Button Modules: LED illuminated OEM compatible button; reliable electrical contact.

   • Glass Motors: 12 V high torque, quiet operation; safe and fast glass movement.

   • Electrical Wiring Harnesses & Connectors: Waterproof connectors, OEM color-coded wiring layout.

3. Mounting Accessories and Small Parts

   • Seal and Panel Clips: OEM compatible plastic/metal clip sets.

   • Screws, Nuts, and Washers: Special alloy screw, spring nut, and washer set.

   • Lubrication & Cleaning Sprays: Silicone-based spray for cleaning gears, seals, and rails.

All parts have been tested to ensure full compatibility and durable operation of the Wiper and Glass Systems set with the W166 model.

Installation and Setup Guide

1. Preparation

   • Turn off the ignition and disconnect the negative terminal of the battery.

   • Prepare the necessary tools (torque wrench, panel spatula).

2. Removal of Old Parts

   • Wiper Arms/Blades: Lift the arm, loosen the nut and remove the arm, detach the rubber seal from the arm.

   • Glass Seal: Remove the seals by taking off the door panel.

   • Glass Lift & Motor: Remove the mechanism by taking off the panel and disconnecting the connectors.

   • Glass Opening Button: Remove the button by taking off the clips from the console panel.

3. Surface Cleaning

   • Clean the panel and seal grooves from dust and old adhesive residues.

   • Clean the contact surfaces of the button panel with electrical spray.

4. Installation of New Parts

   • Glass Seal: Insert the new EPDM seal into the guides until you hear a “click,” then clip it in place.

   • Glass Lift & Motor: Position the mechanism and tighten the bolts and nuts with a torque wrench, then connect the sockets.

   • Glass Opening Button: Fit the panel clips and connect the sockets, then briefly test.

   • Wiper Arms: Tighten the pivot nut with a torque wrench, align the rubber wiper seal.

   • Wiper Motor: Attach the motor to the body and check the connections.

5. Testing and Control

   • Reconnect the battery; use the glass opening button to open and close the glass, confirming smooth movement.

   • Test the wipers at all speed settings; check the water spray function.

   • Test all functions before reattaching the panel, then secure the panel.

Maintenance and Longevity Tips

• Seal Check: Inspect glass seals and wipers for cracks or hardening every 20,000 km.

• Lubrication: Lubricate the glass lift mechanism with silicone spray every 40,000 km.

• Button Maintenance: Regularly clean the contacts of the glass opening button with electrical spray.

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