2012 Mercedes-Benz Cls63 problems, complaints & recalls
Most-reported problem areas: Fuel/Propulsion System (1)
Safety recalls (1)
Exterior Lighting 2015-03-10 · campaign 15V137000 · 30,141 vehicles
Defect: Mercedes-Benz USA, LLC. (MBUSA) is recalling certain model year 2015 CLS 400 and CLS 400 4matic, 2012-2015 CLS 550 and CLS 550 4matic, 2012-2013 CLS 63, 2014 CLS 63, and 2014-2015 CLS 63P. The affected vehicles have LED tail lights that may not light on the sides, reducing the rear side visibility of the vehicle. As such, these vehicles fail to comply with the requirements of Federal Motor Vehicle Safety Standard (FMVSS) No. 108, "Lamps, Reflective Devices, and Associated Equipment."
Risk: Reduced rear side marker illumination may prevent other drivers from seeing the vehicle, increasing the risk of a crash.
Fix: MBUSA will notify owners, and dealers will update the lighting controller software, free of charge. The recall began April 6, 2015. Owners may contact MBUSA customer service at 1-800-367-6372. MBUSA's number for this recall is 2015030005.
Service bulletins (114)
Technical service bulletins are repair instructions manufacturers send dealers for known issues. Unlike recalls, the fix is not automatically free — but naming the bulletin at the service desk can save diagnosis time and support goodwill repairs.
Service Brakes 2026-09-22 · LI42.10-P-078779 · Service Bulletin/Repair Instructions
complaint repeat workshop visit for vehicle vibration while braking from 60mph. note: although the symptom is similar to a tire or wheel vibration, it is usually readily noticeable that it is distinctly different if it happens at all times or only while braking. cause although the cause of the vibra
Structure:body 2026-09-14 · LI82.62-P-078631 · Service Bulletin/Repair Instructions
complaint clanking noise from the area of the speakers in the doors. cause under analysis. remedy to narrow down the cause, first of all remove the door trim. • if the noise continues to occur even with the door trim removed, then continue the diagnosis working towards the speaker and if necessary,
Structure:body 2026-08-06 · LI82.62-P-078631 · Service Bulletin/Repair Instructions
complaint clanking noise from the area of the speakers in the doors. cause under analysis. remedy to narrow down the cause, first of all remove the door trim. • if the noise continues to occur even with the door trim removed, then continue the diagnosis working towards the speaker and if necessary,
Power Train 2026-07-14 · LI35.30-P-058566 · Service Bulletin/Repair Instructions
single throttle lift-off clunking noise from the side shaft when moving off (audible at the outboard end). the noise is heard once in each instance when changing direction of travel. note: sound file in attachment cause if the complaint is eliminated by experimentally loosening the outboard collar n
Electrical System 2026-05-26 · LI82.85-P-080507 · Service Bulletin/Repair Instructions
complaint after successful commissioning of the hermes control unit (n112/9) with xentry diagnosis dvd 03/2026, the message "sos - service not activated" appears on the instrument cluster. in addition, the following two conditions are also met: • hermes (n112/9) control unit: event code b15ce00 is a
Electrical System 2026-05-26 · LI82.85-P-080559 · Service Bulletin/Repair Instructions
complaint the customer requests deactivation of the n112/9 hermes communication module note: deactivation of the hermes control unit (n112/9) is not supported for gray-market vehicles. cause before deactivating the hermes control unit (n112/9), it must be clarified by the legal department of the res
Showing the 6 most recent of 114 bulletins. Search all of them free at nhtsa.gov.
What owners report
2025-09-12 · Fuel/Propulsion System“i have a 2012 mercedes-benz cls63 that is leaking fuel from the rear driver side by the tire. you can smell fuel inside the cabin of the vehicle very strong. on the vin plate on my door it says in my vehicle is built on april 2011 which would qualify it for the recall from mercedes. per nhtsa.…”
Excerpts of consumer complaints filed with NHTSA, lightly truncated. They are owner statements, not verified findings.