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idaeis6

Citan brake light failure warning

Brake light problems on my 2020 Mercedes Citan diesel. Mileage is at 131087 km. I'm getting a brake light failure warning and there's an error code stored. Infotainment system is also showing an error message. Any ideas?

Summary of the thread

A 2020 Mercedes Citan owner experienced a brake light failure warning and an error code, with the infotainment system also displaying an error message. A possible cause suggested was an issue with the brake light switch, potentially due to the brake pedal not fully releasing. The problem was resolved by removing a floor mat that was interfering with the brake pedal travel, eliminating the error without any repair costs.

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4 comment(s)

sarah_mond93

Sounds familiar. I had something similar with my Citan. Is it intermittent? Mine was the brake light switch. Check if the brake pedal is fully releasing. Sometimes a slight obstruction can keep the switch engaged.

idaeis6 (community.author)

How do I check the brake pedal? Is it easy to adjust?

sarah_mond93

You can try pulling the brake pedal up with your foot to see if the light goes off. But if it's the switch, it's probably best to get it checked professionally. It's linked to the vehicle safety system, so better safe than sorry.

idaeis6 (community.author)

Thanks for the advice. Turns out the floor mat was interfering with the brake pedal travel. Removed it, and the error is gone. No repair costs!

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MERCEDES

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CITAN