Is your Mercedes-Benz GLA-Class side mirror broken? This guide is a  step-by-step instruction on how to replace the side mirror for a Mercedez-Benz GLA250. It can be applicable o other models because Mercedes-Benz uses the same turn signal (blinker) design.

What you will need

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Mirror Glass Replacement + Silicone for 2015-2020 Mercedes-Benz GLA250 Passenger Side - Blind Spot...
Mirror Glass Replacement + Silicone for 2015-2020 Mercedes-Benz GLA250 Passenger Side – Blind Spot…
VEHICLE FITMENT – Fits 2015-2020 Mercedes-Benz GLA250 Passenger Side – Blind Spot
  • Prying Tool
  • T10 Screwdriver
  • Side Mirror for Mercedes-Benz
    • A 156 810 29 00 (Driver Side)


  1. Use a prying tool to detach the side mirror from the cover housing. 2017 Mercedes Benz GLA250 Side Mirror Replacement
  2. Disconnect the electric connector for the blind spot sensor, heated mirror, and blinker.Pull off the blind spot sensor connector.

    Pull off the blind spot sensor connector.

    undo connector for heated mirror
    remove mirror shield cover

  3. Once all the connectors are removed, you can now dismantle the housing cover. removed side mirror shield cover
  4. Remove the screws using a T10 screwdriver and push up the led blinker light bulb removed led blinkerpull the led blinker
  5. Put the new led bulb tab and snap it to the lower piece of the side mirror mount. replacment of led bulb blinker
  6. Attach the lower housing piece and snap the front and back side tabs into place to hold it  reinstall lower piece
  7. Snap all the removed connectors and screws to lock it. Do not forget to hook on the blue connector. Use the T10 screwdriver. reconnect all wiring
  8. Put back the side mirror shield, and make sure the blinker is connected.  reinstall side mirror coverscrew tighty use t10
  9. Install the side mirror glass by hooking the two connectors for the heated mirror and blind spot sensor; once mounted, snap it into place. install side mirror glass

Replacing the mirror housing and turn signal on a Mercedes-Benz is easy and can be done at home. The cost to replace the mirror turn signal is $50 – $200, depending on where you purchase the replacement turn signal.

We hope you find the 2014–2020 Mercedes Benz Side Turn Mirror Signal Replacement guide helpful. Check these troubleshooting and repair guides for more help on your Mercedes-Benz.

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