TSB: MERCEDES BENZ AMG C43, AMG C63, AMG C63 S, AMG C63S, AMG E43, AMG E53, AMG E63S, AMG S63, AMG S65, C180, C190, C200, C220, C250, C250 D, C300, C300 4MATIC, C350, C350E, C400, C450, C63S AMG, E300, E350, E400, E43 AMG, E450, E550, S450, S550, S550E, S560, S600, S63, S63 AMG 4MATIC, S65 AMG (2015–2019)

Bulletin LI82-85-P-069789 — May 20, 2019

Bulletin Details

Bulletin IDLI82-85-P-069789
ManufacturerMERCEDES BENZ
ModelsAMG C43, AMG C63, AMG C63 S, AMG C63S, AMG E43, AMG E53, AMG E63S, AMG S63, AMG S65, C180, C190, C200, C220, C250, C250 D, C300, C300 4MATIC, C350, C350E, C400, C450, C63S AMG, E300, E350, E400, E43 AMG, E450, E550, S450, S550, S550E, S560, S600, S63, S63 AMG 4MATIC, S65 AMG
Model Years2015–2019
Date IssuedMay 20, 2019
Date Added to NHTSAJuly 8, 2019
ComponentELECTRICAL SYSTEM:SOFTWARE
Vehicles Affected80 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

NTG 5.5 head unit - Browser shows "Fault during authentication" message

Affected Vehicles

MakeModelYearComponent
MERCEDES-BENZ AMG C43 2019 118000 ELECTRICAL SYSTEM:SOFTWARE
MERCEDES-BENZ AMG C63 2019 118000 ELECTRICAL SYSTEM:SOFTWARE
MERCEDES-BENZ AMG C63 S 2019 118000 ELECTRICAL SYSTEM:SOFTWARE
MERCEDES-BENZ AMG E53 2019 118000 ELECTRICAL SYSTEM:SOFTWARE
MERCEDES-BENZ AMG E63S 2019 118000 ELECTRICAL SYSTEM:SOFTWARE
MERCEDES-BENZ AMG S63 2019 118000 ELECTRICAL SYSTEM:SOFTWARE
MERCEDES-BENZ C300 2019 118000 ELECTRICAL SYSTEM:SOFTWARE
MERCEDES-BENZ C350E 2019 118000 ELECTRICAL SYSTEM:SOFTWARE
MERCEDES-BENZ E300 2019 118000 ELECTRICAL SYSTEM:SOFTWARE
MERCEDES-BENZ E450 2019 118000 ELECTRICAL SYSTEM:SOFTWARE
MERCEDES-BENZ S450 2019 118000 ELECTRICAL SYSTEM:SOFTWARE
MERCEDES-BENZ S560 2019 118000 ELECTRICAL SYSTEM:SOFTWARE
MERCEDES-BENZ S65 AMG 2019 118000 ELECTRICAL SYSTEM:SOFTWARE
MERCEDES-BENZ AMG C43 2018 118000 ELECTRICAL SYSTEM:SOFTWARE
MERCEDES-BENZ AMG C63 2018 118000 ELECTRICAL SYSTEM:SOFTWARE
MERCEDES-BENZ AMG C63S 2018 118000 ELECTRICAL SYSTEM:SOFTWARE
MERCEDES-BENZ AMG E63S 2018 118000 ELECTRICAL SYSTEM:SOFTWARE
MERCEDES-BENZ AMG S63 2018 118000 ELECTRICAL SYSTEM:SOFTWARE
MERCEDES-BENZ C250 D 2018 118000 ELECTRICAL SYSTEM:SOFTWARE
MERCEDES-BENZ C300 2018 118000 ELECTRICAL SYSTEM:SOFTWARE
MERCEDES-BENZ C300 4MATIC 2018 118000 ELECTRICAL SYSTEM:SOFTWARE
MERCEDES-BENZ C350E 2018 118000 ELECTRICAL SYSTEM:SOFTWARE
MERCEDES-BENZ E300 2018 118000 ELECTRICAL SYSTEM:SOFTWARE
MERCEDES-BENZ E400 2018 118000 ELECTRICAL SYSTEM:SOFTWARE
MERCEDES-BENZ E43 AMG 2018 118000 ELECTRICAL SYSTEM:SOFTWARE
MERCEDES-BENZ S450 2018 118000 ELECTRICAL SYSTEM:SOFTWARE
MERCEDES-BENZ S550 2018 118000 ELECTRICAL SYSTEM:SOFTWARE
MERCEDES-BENZ S560 2018 118000 ELECTRICAL SYSTEM:SOFTWARE
MERCEDES-BENZ S63 2018 118000 ELECTRICAL SYSTEM:SOFTWARE
MERCEDES-BENZ S65 AMG 2018 118000 ELECTRICAL SYSTEM:SOFTWARE
MERCEDES-BENZ AMG C43 2017 118000 ELECTRICAL SYSTEM:SOFTWARE
MERCEDES-BENZ AMG C63 2017 118000 ELECTRICAL SYSTEM:SOFTWARE
MERCEDES-BENZ AMG E43 2017 118000 ELECTRICAL SYSTEM:SOFTWARE
MERCEDES-BENZ AMG S63 2017 118000 ELECTRICAL SYSTEM:SOFTWARE
MERCEDES-BENZ AMG S65 2017 118000 ELECTRICAL SYSTEM:SOFTWARE
MERCEDES-BENZ C300 2017 118000 ELECTRICAL SYSTEM:SOFTWARE
MERCEDES-BENZ C350 2017 118000 ELECTRICAL SYSTEM:SOFTWARE
MERCEDES-BENZ C350E 2017 118000 ELECTRICAL SYSTEM:SOFTWARE
MERCEDES-BENZ C450 2017 118000 ELECTRICAL SYSTEM:SOFTWARE
MERCEDES-BENZ C63S AMG 2017 118000 ELECTRICAL SYSTEM:SOFTWARE
MERCEDES-BENZ E300 2017 118000 ELECTRICAL SYSTEM:SOFTWARE
MERCEDES-BENZ E350 2017 118000 ELECTRICAL SYSTEM:SOFTWARE
MERCEDES-BENZ E400 2017 118000 ELECTRICAL SYSTEM:SOFTWARE
MERCEDES-BENZ E550 2017 118000 ELECTRICAL SYSTEM:SOFTWARE
MERCEDES-BENZ S550 2017 118000 ELECTRICAL SYSTEM:SOFTWARE
MERCEDES-BENZ S550E 2017 118000 ELECTRICAL SYSTEM:SOFTWARE
MERCEDES-BENZ S600 2017 118000 ELECTRICAL SYSTEM:SOFTWARE
MERCEDES-BENZ S63 2017 118000 ELECTRICAL SYSTEM:SOFTWARE
MERCEDES-BENZ S65 AMG 2017 118000 ELECTRICAL SYSTEM:SOFTWARE
MERCEDES-BENZ AMG C43 2016 118000 ELECTRICAL SYSTEM:SOFTWARE
MERCEDES-BENZ AMG C63 2016 118000 ELECTRICAL SYSTEM:SOFTWARE
MERCEDES-BENZ AMG S63 2016 118000 ELECTRICAL SYSTEM:SOFTWARE
MERCEDES-BENZ AMG S65 2016 118000 ELECTRICAL SYSTEM:SOFTWARE
MERCEDES-BENZ C190 2016 118000 ELECTRICAL SYSTEM:SOFTWARE
MERCEDES-BENZ C250 2016 118000 ELECTRICAL SYSTEM:SOFTWARE
MERCEDES-BENZ C300 2016 118000 ELECTRICAL SYSTEM:SOFTWARE
MERCEDES-BENZ C350 2016 118000 ELECTRICAL SYSTEM:SOFTWARE
MERCEDES-BENZ C350E 2016 118000 ELECTRICAL SYSTEM:SOFTWARE
MERCEDES-BENZ C450 2016 118000 ELECTRICAL SYSTEM:SOFTWARE
MERCEDES-BENZ C63S AMG 2016 118000 ELECTRICAL SYSTEM:SOFTWARE
MERCEDES-BENZ S550 2016 118000 ELECTRICAL SYSTEM:SOFTWARE
MERCEDES-BENZ S600 2016 118000 ELECTRICAL SYSTEM:SOFTWARE
MERCEDES-BENZ S63 2016 118000 ELECTRICAL SYSTEM:SOFTWARE
MERCEDES-BENZ S63 AMG 4MATIC 2016 118000 ELECTRICAL SYSTEM:SOFTWARE
MERCEDES-BENZ AMG C63 2015 118000 ELECTRICAL SYSTEM:SOFTWARE
MERCEDES-BENZ AMG S63 2015 118000 ELECTRICAL SYSTEM:SOFTWARE
MERCEDES-BENZ AMG S65 2015 118000 ELECTRICAL SYSTEM:SOFTWARE
MERCEDES-BENZ C180 2015 118000 ELECTRICAL SYSTEM:SOFTWARE
MERCEDES-BENZ C190 2015 118000 ELECTRICAL SYSTEM:SOFTWARE
MERCEDES-BENZ C200 2015 118000 ELECTRICAL SYSTEM:SOFTWARE
MERCEDES-BENZ C220 2015 118000 ELECTRICAL SYSTEM:SOFTWARE
MERCEDES-BENZ C250 2015 118000 ELECTRICAL SYSTEM:SOFTWARE
MERCEDES-BENZ C300 2015 118000 ELECTRICAL SYSTEM:SOFTWARE
MERCEDES-BENZ C350 2015 118000 ELECTRICAL SYSTEM:SOFTWARE
MERCEDES-BENZ C400 2015 118000 ELECTRICAL SYSTEM:SOFTWARE
MERCEDES-BENZ C63S AMG 2015 118000 ELECTRICAL SYSTEM:SOFTWARE
MERCEDES-BENZ S550 2015 118000 ELECTRICAL SYSTEM:SOFTWARE
MERCEDES-BENZ S600 2015 118000 ELECTRICAL SYSTEM:SOFTWARE
MERCEDES-BENZ S63 2015 118000 ELECTRICAL SYSTEM:SOFTWARE
MERCEDES-BENZ S63 AMG 4MATIC 2015 118000 ELECTRICAL SYSTEM:SOFTWARE

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What Should You Do?

If your vehicle is affected by this TSB, contact your authorized MERCEDES BENZ dealer. Bring this bulletin ID (LI82-85-P-069789) 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.