gabrielfuchs4
A Klasse power window issue
Summary of the thread
The power windows on a 2022 Mercedes A Klasse hybrid stopped working, with an error code indicating a window control system issue. The initial suspicion was a faulty power window switch. Possible causes included a failed switch, loose wiring harness connections, or a faulty window control module. After further diagnosis and professional repair, the issue was confirmed to be the power window switch, which was successfully replaced.
Did this summary help you solve your problem?
4 comment(s)
gabrielfuchs4 (community.author)
Thanks for the reply. Is there a specific area I should focus on with the wiring harness, or a common point of failure? Also, where is the window control module located in the A Klasse? I'm reasonably proficient, but haven't located the module yet.
richardschulze6
The wiring harness often fails where it passes from the car body into the door, due to repeated flexing. The control module location varies, but generally it is behind the door panel or under the dash. Considering the mileage and the error code, it might be simplest to get it checked at a workshop. A diagnostic tool will pinpoint the issue quickly.
gabrielfuchs4 (community.author)
Thanks for your assistance. After some further diagnosis, I decided to take it to a mechanic. It turned out to be the power window switch, as initially suspected. The repair including parts and labor cost around 200€. All working fine now.
rmh_community_comment_box_header
community_crosslink_scanner_headline
community_crosslink_scanner_intro
community_crosslink_scanner_title
community_crosslink_scanner_price
community_crosslink_rmh_headline
community_crosslink_rmh_intro
community_crosslink_rmh_title
community_crosslink_rmh_subtitle
community_crosslink_rmh_brand
MERCEDES
community_crosslink_rmh_model
AKLASSE
richardschulze6
I had a similar issue with my A Klasse. The symptoms sound very familiar. It was indeed the power window switch that failed. Have you checked the wiring harness that connects to the switch? Sometimes a loose connection or damaged wire can cause this, before condemning the regulator itself. Also, consider the possibility of a faulty window control module. It might be worth checking the voltage at the switch to see if it is getting power.