TSB: MERCEDES BENZ C200, C250, GLC300, GLC350, GLC350E, GLC63, GLC63S AMG, SLC 43 AMG, SLC300, SLK250, SLK300, SLK350, SLK55, SLK55 AMG (2013–2021)

Bulletin Launch EW NCU — July 30, 2021

Bulletin Details

Bulletin IDLaunch EW NCU
ManufacturerMERCEDES BENZ
ModelsC200, C250, GLC300, GLC350, GLC350E, GLC63, GLC63S AMG, SLC 43 AMG, SLC300, SLK250, SLK300, SLK350, SLK55, SLK55 AMG
Model Years2013–2021
Date IssuedJuly 30, 2021
Date Added to NHTSAAugust 4, 2021
ComponentFUEL SYSTEM, GASOLINE
Vehicles Affected42 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

Launch EW NCU - Low Pressure Fuel Hose MY 15-17 205 213 253 172

Affected Vehicles

MakeModelYearComponent
MERCEDES-BENZ GLC300 2021 070000 FUEL SYSTEM, GASOLINE
MERCEDES-BENZ GLC350E 2021 070000 FUEL SYSTEM, GASOLINE
MERCEDES-BENZ GLC300 2020 070000 FUEL SYSTEM, GASOLINE
MERCEDES-BENZ GLC350 2020 070000 FUEL SYSTEM, GASOLINE
MERCEDES-BENZ GLC350E 2020 070000 FUEL SYSTEM, GASOLINE
MERCEDES-BENZ GLC63 2020 070000 FUEL SYSTEM, GASOLINE
MERCEDES-BENZ SLC300 2020 070000 FUEL SYSTEM, GASOLINE
MERCEDES-BENZ GLC300 2019 070000 FUEL SYSTEM, GASOLINE
MERCEDES-BENZ GLC350 2019 070000 FUEL SYSTEM, GASOLINE
MERCEDES-BENZ GLC350E 2019 070000 FUEL SYSTEM, GASOLINE
MERCEDES-BENZ GLC63 2019 070000 FUEL SYSTEM, GASOLINE
MERCEDES-BENZ GLC63S AMG 2019 070000 FUEL SYSTEM, GASOLINE
MERCEDES-BENZ SLC 43 AMG 2019 070000 FUEL SYSTEM, GASOLINE
MERCEDES-BENZ SLC300 2019 070000 FUEL SYSTEM, GASOLINE
MERCEDES-BENZ GLC300 2018 070000 FUEL SYSTEM, GASOLINE
MERCEDES-BENZ GLC350 2018 070000 FUEL SYSTEM, GASOLINE
MERCEDES-BENZ GLC350E 2018 070000 FUEL SYSTEM, GASOLINE
MERCEDES-BENZ GLC63 2018 070000 FUEL SYSTEM, GASOLINE
MERCEDES-BENZ GLC63S AMG 2018 070000 FUEL SYSTEM, GASOLINE
MERCEDES-BENZ SLC 43 AMG 2018 070000 FUEL SYSTEM, GASOLINE
MERCEDES-BENZ SLC300 2018 070000 FUEL SYSTEM, GASOLINE
MERCEDES-BENZ GLC300 2017 070000 FUEL SYSTEM, GASOLINE
MERCEDES-BENZ SLC 43 AMG 2017 070000 FUEL SYSTEM, GASOLINE
MERCEDES-BENZ SLC300 2017 070000 FUEL SYSTEM, GASOLINE
MERCEDES-BENZ SLK350 2017 070000 FUEL SYSTEM, GASOLINE
MERCEDES-BENZ C250 2016 070000 FUEL SYSTEM, GASOLINE
MERCEDES-BENZ GLC300 2016 070000 FUEL SYSTEM, GASOLINE
MERCEDES-BENZ SLC300 2016 070000 FUEL SYSTEM, GASOLINE
MERCEDES-BENZ SLK250 2016 070000 FUEL SYSTEM, GASOLINE
MERCEDES-BENZ SLK300 2016 070000 FUEL SYSTEM, GASOLINE
MERCEDES-BENZ SLK350 2016 070000 FUEL SYSTEM, GASOLINE
MERCEDES-BENZ SLK55 AMG 2016 070000 FUEL SYSTEM, GASOLINE
MERCEDES-BENZ C200 2015 070000 FUEL SYSTEM, GASOLINE
MERCEDES-BENZ C250 2015 070000 FUEL SYSTEM, GASOLINE
MERCEDES-BENZ SLK250 2015 070000 FUEL SYSTEM, GASOLINE
MERCEDES-BENZ SLK300 2015 070000 FUEL SYSTEM, GASOLINE
MERCEDES-BENZ SLK350 2015 070000 FUEL SYSTEM, GASOLINE
MERCEDES-BENZ SLK55 AMG 2015 070000 FUEL SYSTEM, GASOLINE
MERCEDES-BENZ SLK250 2014 070000 FUEL SYSTEM, GASOLINE
MERCEDES-BENZ SLK350 2014 070000 FUEL SYSTEM, GASOLINE
MERCEDES-BENZ SLK55 2014 070000 FUEL SYSTEM, GASOLINE
MERCEDES-BENZ SLK55 AMG 2013 070000 FUEL SYSTEM, GASOLINE

Related MERCEDES BENZ Recalls

CampaignModelYearComponentSummary
GLS 450 4MATIC 2026 AIR BAGS:PASSENGER SIDE FRONTAL:CUSHION Mercedes-Benz USA, LLC (MBUSA) is recalling certain 2026 GLE 350 4MATIC, GLE ...
GLE 580 4MATIC 2026 AIR BAGS:PASSENGER SIDE FRONTAL:CUSHION Mercedes-Benz USA, LLC (MBUSA) is recalling certain 2026 GLE 350 4MATIC, GLE ...
AMG GLS63 4MATIC 2026 AIR BAGS:PASSENGER SIDE FRONTAL:CUSHION Mercedes-Benz USA, LLC (MBUSA) is recalling certain 2026 GLE 350 4MATIC, GLE ...
AMG GLE63 S 4MATIC 2026 AIR BAGS:PASSENGER SIDE FRONTAL:CUSHION Mercedes-Benz USA, LLC (MBUSA) is recalling certain 2026 GLE 350 4MATIC, GLE ...
GLE 450E 4MATIC 2026 AIR BAGS:PASSENGER SIDE FRONTAL:CUSHION Mercedes-Benz USA, LLC (MBUSA) is recalling certain 2026 GLE 350 4MATIC, GLE ...

What Should You Do?

If your vehicle is affected by this TSB, contact your authorized MERCEDES BENZ dealer. Bring this bulletin ID (Launch EW NCU) 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.