TSB: MERCEDES-BENZ AMG C43, AMG GLC43, AMG GLC63, AMG GT, AMG GT 63, AMG GT53, AMG GT63, AMG GT63S, C300, GLC300, GLC350E, GLC63, GLC63S AMG (2019–2020)

Bulletin NCU-2020080005 — August 14, 2020

Bulletin Details

Bulletin IDNCU-2020080005
ManufacturerMERCEDES-BENZ
ModelsAMG C43, AMG GLC43, AMG GLC63, AMG GT, AMG GT 63, AMG GT53, AMG GT63, AMG GT63S, C300, GLC300, GLC350E, GLC63, GLC63S AMG
Model Years2019–2020
Date IssuedAugust 14, 2020
Date Added to NHTSASeptember 21, 2020
ComponentENGINE (PWS)
Vehicles Affected38 combinations

What is a TSB?

A Technical Service Bulletin is a document issued by the vehicle manufacturer to inform dealership technicians about a known issue and the recommended repair procedure. TSBs are not mandatory recalls — they serve as repair guidance for common problems.

If your vehicle has this issue, bring this bulletin ID to your dealer. If under warranty, the repair should be covered at no cost.

Summary

Mercedes-Benz AG ("MBAG"), the manufacturer of Mercedes-Benz, has determined that on certain MY19-20 C-Class, GLC-Class, and AMG GT (205, 253, and 290 platform) vehicles, the software for the AMG drive unit control unit does not correspond

Affected Vehicles

MakeModelYearComponent
MERCEDES-BENZ AMG GLC43 2020 060000 ENGINE (PWS)
MERCEDES-BENZ AMG GLC43 2020 118000 ELECTRICAL SYSTEM:SOFTWARE
MERCEDES-BENZ AMG GT 2020 118000 ELECTRICAL SYSTEM:SOFTWARE
MERCEDES-BENZ AMG GT 2020 060000 ENGINE (PWS)
MERCEDES-BENZ AMG GT53 2020 060000 ENGINE (PWS)
MERCEDES-BENZ AMG GT53 2020 118000 ELECTRICAL SYSTEM:SOFTWARE
MERCEDES-BENZ AMG GT63 2020 060000 ENGINE (PWS)
MERCEDES-BENZ AMG GT63 2020 118000 ELECTRICAL SYSTEM:SOFTWARE
MERCEDES-BENZ AMG GT63S 2020 060000 ENGINE (PWS)
MERCEDES-BENZ AMG GT63S 2020 118000 ELECTRICAL SYSTEM:SOFTWARE
MERCEDES-BENZ GLC300 2020 060000 ENGINE (PWS)
MERCEDES-BENZ GLC300 2020 118000 ELECTRICAL SYSTEM:SOFTWARE
MERCEDES-BENZ AMG C43 2019 118000 ELECTRICAL SYSTEM:SOFTWARE
MERCEDES-BENZ AMG C43 2019 060000 ENGINE (PWS)
MERCEDES-BENZ AMG GLC43 2019 118000 ELECTRICAL SYSTEM:SOFTWARE
MERCEDES-BENZ AMG GLC43 2019 060000 ENGINE (PWS)
MERCEDES-BENZ AMG GLC63 2019 060000 ENGINE (PWS)
MERCEDES-BENZ AMG GLC63 2019 118000 ELECTRICAL SYSTEM:SOFTWARE
MERCEDES-BENZ AMG GT 2019 060000 ENGINE (PWS)
MERCEDES-BENZ AMG GT 2019 118000 ELECTRICAL SYSTEM:SOFTWARE
MERCEDES-BENZ AMG GT 63 2019 060000 ENGINE (PWS)
MERCEDES-BENZ AMG GT 63 2019 118000 ELECTRICAL SYSTEM:SOFTWARE
MERCEDES-BENZ AMG GT53 2019 060000 ENGINE (PWS)
MERCEDES-BENZ AMG GT53 2019 118000 ELECTRICAL SYSTEM:SOFTWARE
MERCEDES-BENZ AMG GT63 2019 060000 ENGINE (PWS)
MERCEDES-BENZ AMG GT63 2019 118000 ELECTRICAL SYSTEM:SOFTWARE
MERCEDES-BENZ AMG GT63S 2019 118000 ELECTRICAL SYSTEM:SOFTWARE
MERCEDES-BENZ AMG GT63S 2019 060000 ENGINE (PWS)
MERCEDES-BENZ C300 2019 060000 ENGINE (PWS)
MERCEDES-BENZ C300 2019 118000 ELECTRICAL SYSTEM:SOFTWARE
MERCEDES-BENZ GLC300 2019 060000 ENGINE (PWS)
MERCEDES-BENZ GLC300 2019 118000 ELECTRICAL SYSTEM:SOFTWARE
MERCEDES-BENZ GLC350E 2019 060000 ENGINE (PWS)
MERCEDES-BENZ GLC350E 2019 118000 ELECTRICAL SYSTEM:SOFTWARE
MERCEDES-BENZ GLC63 2019 060000 ENGINE (PWS)
MERCEDES-BENZ GLC63 2019 118000 ELECTRICAL SYSTEM:SOFTWARE
MERCEDES-BENZ GLC63S AMG 2019 060000 ENGINE (PWS)
MERCEDES-BENZ GLC63S AMG 2019 118000 ELECTRICAL SYSTEM:SOFTWARE

Related MERCEDES-BENZ Recalls

CampaignModelYearComponentSummary
GLC 300 2026 ELECTRICAL SYSTEM: INSTRUMENT CLUSTER... Mercedes-Benz USA, LLC (MBUSA) is recalling certain 2024-2026 AMG GT, C-Class...
E 450 4MATIC 2026 ELECTRICAL SYSTEM: INSTRUMENT CLUSTER... Mercedes-Benz USA, LLC (MBUSA) is recalling certain 2024-2026 AMG GT, C-Class...
AMG GT43 2026 ELECTRICAL SYSTEM: INSTRUMENT CLUSTER... Mercedes-Benz USA, LLC (MBUSA) is recalling certain 2024-2026 AMG GT, C-Class...
AMG GLC63 S E 4MATIC+ COUPE 2026 ELECTRICAL SYSTEM: INSTRUMENT CLUSTER... Mercedes-Benz USA, LLC (MBUSA) is recalling certain 2024-2026 AMG GT, C-Class...
E 450 4MATIC 2024 ELECTRICAL SYSTEM: INSTRUMENT CLUSTER... Mercedes-Benz USA, LLC (MBUSA) is recalling certain 2024-2026 AMG GT, C-Class...

What Should You Do?

If your vehicle is affected by this TSB, contact your authorized MERCEDES-BENZ dealer. Bring this bulletin ID (NCU-2020080005) when you visit. If under warranty, the repair should be free. If your warranty has expired, ask about goodwill coverage — manufacturers sometimes cover TSB-related repairs beyond the warranty period.

Frequently Asked Questions

A recall is a mandatory safety fix — the manufacturer must repair every affected vehicle for free. A TSB is an advisory document that describes a known issue and the recommended fix, but repairs are not required. However, some TSBs eventually lead to recalls if the issue poses a safety risk. TSBs are generally issued for quality or performance problems, while recalls address safety defects.

If your vehicle is still under the manufacturer's warranty, TSB-related repairs are typically covered at no cost. If your warranty has expired, you can ask the dealer about goodwill or customer assistance programs. Many manufacturers will cover or partially cover repairs for well-known issues, especially if the TSB was issued recently or affects a large number of vehicles.

Check the make, model, and model year listed above against your vehicle. If they match, this bulletin likely applies. However, TSBs may only affect vehicles with specific production dates, VIN ranges, or configurations. Your dealer can confirm by entering your VIN into their service system, which will show all applicable TSBs and recalls.

This data comes from the National Highway Traffic Safety Administration (NHTSA). Manufacturers are required to submit copies of all communications (including TSBs) sent to their dealers to NHTSA. The agency makes this data publicly available as part of its vehicle safety monitoring program.