2020 Mercedes-Benz C300 Technical Service Bulletins

183 technical service bulletins (TSBs) are on record for the 2020 Mercedes-Benz C300. TSBs are notes manufacturers send to dealers about repair procedures for issues seen in the field. They are not recalls and do not by themselves mean a vehicle has a fault.

• 10191278Mar 16, 2021Electrical system. Fault in 12 V interlock circuit
• 10191279Mar 12, 2021Electrical system. When ordering the electrohydraulic controller unit (EHS) using the part number stated on the EHS, the wrong parts may be ordered.
• 10189406Feb 22, 2021Back-over prevention (rear camera). If the exhaust flap is operated or the drive program is changed within 10 seconds of the engine being started, an audible humming noise may emit from the speakers. New sound amp (N40/3) software is currently in development. This document will be updated once it is released. Meanwhile, avoid toggling the drive program or the exhaust flap with 10 seconds of an engine start to avoid the possibility of the complaint…
• 10186148Dec 30, 2020Visibility (wipers, defrost, mirrors). Air Conditioning Intermittently Does Not Cool
• 10186141Dec 10, 2020Electrical system. NTG5.5: Incorrect time shown on instrument cluster, COMAND display, and analog clock
• 10179950Aug 26, 2020Transmission and drivetrain. Harsh engagement when changing gear range from P to D or R
• 10179949Aug 24, 2020Transmission and drivetrain. Shifting complaints and transmission fault codes in vehicles with transmission 725.0
• 10179974Aug 21, 2020Transmission and drivetrain, Wheels. Check seal bellows at wheel carrier supporting joint of left and right rear axle, replace if necessary
• 10179955Aug 7, 2020Steering. Steering wheel heater and/or Distronic function limited
• 10178732Jul 20, 2020Equipment. Air Conditioning Intermittently Does Not Cool
• 10178744Jul 17, 2020Equipment. The operator's manual for the above vehicles does not comply with current specifications. "Daimler AG" may be documented as the manufacturer in the operator's manual. The new manufacturer is "Mercedes-Benz AG." We thus ask that you place the supplementary booklet into the vehicle. The work required for this purpose can be found in the attached work description.
• 10178712Jul 2, 2020Fuel system, Other or unknown. Message in the Instrument Cluster "Refill 1L Oil at the Next Fuel Stop"
• 10178711Jul 1, 2020Electrical system, Fuel system, Other or unknown. Message in the Instrument Cluster "Refill 1L Oil at the Next Fuel Stop"
• 10178715Jun 30, 2020Exterior lighting. Headlamps fogged
• 10177565Jun 25, 2020Equipment. The mobile phone address book is not transferred completely to the multimedia system (COMAND or MBUX). In some cases, the call list shows just the telephone numbers but no names. The problem only occurs in conjunction with the iPhone and software version iOS 13.x.
• 10177561Jun 18, 2020Electrical system, Transmission and drivetrain, Engine, Equipment. The check engine indicator light in the instrument cluster may be illuminated with one of the following fault codes: P261029, P02FF85, or P02FF02 stored in the engine control unit (N3/10). The time in instrument cluster is implausible due to an internal reset.
• 10176666May 19, 2020Electrical system, Equipment. NTG5.5 Audio 20: Static noise heard after opening the door
• 10176663May 19, 2020Engine. Check engine indicator light active and fault code P261029/P02FF85/P02FF02 stored in engine control unit
• 10175245Apr 30, 2020Equipment. NTG5.5 Audio 20 with codes 355 and 357: Vehicle positioning inaccurate / implausible, route guidance not possible
• 10172683Feb 7, 2020Tires, Equipment. Information Label on Tire Sealant
• 10169586Nov 14, 2019Equipment. EASY-Pack liftgate does not fully open
• 10205232Nov 30, 2016Equipment. Disturbed Antenna Signal.
• 10205242Nov 29, 2016Equipment. Navigation system permanently displays "Activating".
• 10205266Nov 21, 2016Equipment. Map pocket on front seat backrest trim does not close.
• 10205240Aug 29, 2016Equipment. Reset the customer-specific data and perform a software update of the AUDIO20 control unit.
• 10205223Aug 26, 2016Exterior lighting. Headlamp fog.
• 10205156Aug 26, 2016Transmission and drivetrain, Other or unknown. Intial startup not possible after replacement of transmisson 725.0 or of electrohydraulic controller unit.
• 10205247Aug 25, 2016Equipment. Traffic information service and posibly the voice control, nonfunctional after navigation software update.
• 10205241Aug 25, 2016Equipment. Navigation system permanently displays "Activating".
• 10205230Aug 15, 2016Equipment. CD/DVD No longer ejected or drawn in.
• 10205252Aug 11, 2016Electrical system. High voltage battery warning message in instrument cluster.
• 10205154Aug 5, 2016Engine cooling, Other or unknown. Gasket may settle causing a slight oil leak.
• 10205215Jul 30, 2013Visibility (wipers, defrost, mirrors), Vehicle speed control, Equipment…. Window lifter and outside mirror on passenger side malfunction after replacement of door control unit.

← All problems reported for the 2020 Mercedes-Benz C300