ZAPOSTS Power Window Switch Fits for Mercedes-Benz Benz

This replacement master switch assembly fits a wide range of Mercedes-Benz vehicles—covering CLA, GLA, GLE, GL, ML, A, B and G-Class variants—offering the same function as OEM part numbers like 1669054400 and A1669054400. The unit provides the central controls for front and rear windows and integrates with door mirror adjustments on compatible models. Before ordering, verify your vehicle model and the interchangeable part numbers listed to ensure correct fitment.

Will this switch work with my Mercedes-Benz model?

Compatibility depends on the specific model year and the original part number on your vehicle. ZAPOSTS ships this switch for numerous Mercedes-Benz model years; consult the adaptation list to confirm. If your car’s OEM number matches any of the replacement part numbers, this item is likely compatible.

• Check the vehicle list: CLA, GLA, GLE, GL, ML, A, B, G-Class ranges.
• Compare OEM numbers: 1669054400, A1669054400, 16690544009107 and equivalents.
• Confirm model year is included in the provided compatibility range.
• Contact seller with your VIN or order page if unsure.

How difficult is installation and what precautions should I take?

Installation is straightforward for anyone comfortable with trim removal and basic connectors; the part is designed as a direct replacement without special tools. Still, simple safety steps will prevent damage to the switch or vehicle electrical system. Follow the advice to power down the car and align the plug carefully before seating the connector.

• Turn off vehicle power before beginning removal.
• Remove door trim carefully to access the switch housing.
• Align plug parallel to socket to avoid pin bending or poor contact.
• Confirm plug is fully seated before reassembling the door panel.

What features and part numbers does this replacement include?

This master switch assembly replaces multiple Mercedes part numbers and replicates the original control functions for windows and mirrors where applicable. It is intended as a direct-fit replacement to restore full driver-side control without modifying wiring harnesses. The listing highlights the main interchangeable part numbers for easy cross-reference.

• Replaces: 1669054400, A1669054400, 16690544009107, A16690544009107.
• Also cross-referenced: 29290550009107 and A29290550009107.
• Direct replacement design—no special tools required.
• Sold as driver-side master control for multi-window/mirror operation.

What troubleshooting steps should I try if the new switch doesn’t work immediately?

If the replacement does not operate right away, first verify electrical connections and compatibility. Often issues come from a misaligned plug, blown fuse, or an unrelated wiring fault rather than the switch itself. Following a short checklist can help you isolate the problem before seeking further assistance.

• Ensure the battery/main power was disconnected during installation.
• Reinspect the connector for bent pins or incomplete seating.
• Check the vehicle’s fuses for window/mirror circuits.
• Consult the seller or dealer with your VIN if problems persist.

Who is this for: Drivers and DIY mechanics who own covered Mercedes-Benz models and need an OEM-style replacement for a failing driver-side window/mirror master switch. This unit is geared toward owners who want a plug-and-play swap using the listed part numbers, and technicians performing routine interior electrical repairs. If you want a like-for-like control replacement without expensive dealer parts, confirm fitment with the adaptation list and the OEM numbers before purchase.