ZAPOSTS Power Window Master Switch for Mercedes‑Benz Driver Side — Fits 2012–2017 CLA/GLA/GLE/GL/ML, OEM-fit plug-and-play control

ZAPOSTS Power Window Master Switch is a direct-fit driver-side control switch designed to replace worn or faulty window switches on select 2012–2017 Mercedes‑Benz models.

This replacement master switch restores control of all front and rear windows and the door lock functions for compatible Mercedes‑Benz vehicles. It is built as a plug-and-play unit that matches the OEM connector and pin configuration, offering a straightforward swap for owners and technicians. Confirm fitment with your vehicle year and the shape and pins of your original switch before installation.

Will this switch fit my Mercedes‑Benz model?

Check the detailed vehicle list carefully: this switch is made for many B‑class, CLA, GLA, GLE, GL and ML models from 2012–2017. Compatibility depends on both the model/year and the exact connector layout on your original unit.

• Compatible models include: B250 (2013–2017), CLA250/CLA45 AMG (2014–2017), GLA250/GLA45 AMG (2015–2017).
• Also fits many GLE variants (GLE300d, GLE350, GLE400, GLE550e, GLE63 AMG) and GLS63 AMG (2016–2017).
• GL/ML series compatibility covers GL350/GL450/GL63 AMG and ML250/ML350/ML400/ML63 AMG years shown in listing.
• Always compare the front face, rear plug, and 3-pin configuration to your original switch.

How easy is it to install the ZAPOSTS master switch?

Installation is designed to be simple for anyone comfortable with basic interior trim removal. Power should be turned off and the connector aligned carefully to avoid bent pins. If unsure, a professional installation is recommended.

• Turn vehicle power off before starting work.
• Remove door trim carefully to access the switch housing.
• Align the 3-pin connector and press in until it clicks to ensure a secure connection.

What part numbers does this replace and what should I verify?

This unit replaces OEM part numbers 1669054300, 2929054900, A1669054300 and A2929054900. Confirm your original switch matches these references and visually compare connector and faceplate details before ordering.

• Replaces OEM: 1669054300, 2929054900, A1669054300, A2929054900.
• Verify the front face is identical, including the 0 AUTO marking if present.
• Confirm the back connector has the same 3 pins and physical layout.

What precautions and maintenance tips should I follow?

Take standard electrical safety steps and avoid forcing the connector. Proper alignment prevents pin damage and intermittent contact. Regularly clean contacts and keep the switch area free of moisture and heavy dirt to prolong function.

• Always cut vehicle power before swapping the switch.
• Plug in parallel; avoid angling the connector to prevent pin deformation.
• Contact seller via your purchase order page if you need help or have fitment questions.

Who is this for? Owners and technicians of compatible Mercedes‑Benz models looking for a reliable, OEM-replacement driver-side window master switch. This product suits those who prefer a cost-effective repair to restore window and lock controls without replacing larger door assemblies. Confirm fitment and connector details before purchase to ensure a smooth, plug-and-play installation.