TSB: MERCEDES BENZ AMG ML63, CLS, CLS550, CLS63, E, E350, E550, E63, ML350, ML500, ML550 (2012)

Bulletin NCU-2019080019 — July 10, 2020

Bulletin Details

Bulletin IDNCU-2019080019
ManufacturerMERCEDES BENZ
ModelsAMG ML63, CLS, CLS550, CLS63, E, E350, E550, E63, ML350, ML500, ML550
Model Years2012
Date IssuedJuly 10, 2020
Date Added to NHTSAAugust 24, 2020
ComponentSTEERING
Vehicles Affected44 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

The aluminum bolts of the steering gear housing cover and the aluminum bolts on the powerpack may corrode in corrosion-critical countries where exposed combination with particularly aggressive thawing agents (saltwater mixtures) in certain

Affected Vehicles

MakeModelYearComponent
MERCEDES-BENZ AMG ML63 2012 356000 EQUIPMENT ADAPTIVE/MOBILITY
MERCEDES-BENZ AMG ML63 2012 350000 EQUIPMENT
MERCEDES-BENZ AMG ML63 2012 013000 STEERING:GEAR BOX (OTHER THAN RACK AND PINION)
MERCEDES-BENZ AMG ML63 2012 010000 STEERING
MERCEDES-BENZ CLS 2012 356000 EQUIPMENT ADAPTIVE/MOBILITY
MERCEDES-BENZ CLS 2012 350000 EQUIPMENT
MERCEDES-BENZ CLS 2012 013000 STEERING:GEAR BOX (OTHER THAN RACK AND PINION)
MERCEDES-BENZ CLS 2012 010000 STEERING
MERCEDES-BENZ CLS550 2012 356000 EQUIPMENT ADAPTIVE/MOBILITY
MERCEDES-BENZ CLS550 2012 350000 EQUIPMENT
MERCEDES-BENZ CLS550 2012 013000 STEERING:GEAR BOX (OTHER THAN RACK AND PINION)
MERCEDES-BENZ CLS550 2012 010000 STEERING
MERCEDES-BENZ CLS63 2012 010000 STEERING
MERCEDES-BENZ CLS63 2012 013000 STEERING:GEAR BOX (OTHER THAN RACK AND PINION)
MERCEDES-BENZ CLS63 2012 350000 EQUIPMENT
MERCEDES-BENZ CLS63 2012 356000 EQUIPMENT ADAPTIVE/MOBILITY
MERCEDES-BENZ E 2012 010000 STEERING
MERCEDES-BENZ E 2012 013000 STEERING:GEAR BOX (OTHER THAN RACK AND PINION)
MERCEDES-BENZ E 2012 350000 EQUIPMENT
MERCEDES-BENZ E 2012 356000 EQUIPMENT ADAPTIVE/MOBILITY
MERCEDES-BENZ E350 2012 013000 STEERING:GEAR BOX (OTHER THAN RACK AND PINION)
MERCEDES-BENZ E350 2012 010000 STEERING
MERCEDES-BENZ E350 2012 350000 EQUIPMENT
MERCEDES-BENZ E350 2012 356000 EQUIPMENT ADAPTIVE/MOBILITY
MERCEDES-BENZ E550 2012 350000 EQUIPMENT
MERCEDES-BENZ E550 2012 013000 STEERING:GEAR BOX (OTHER THAN RACK AND PINION)
MERCEDES-BENZ E550 2012 356000 EQUIPMENT ADAPTIVE/MOBILITY
MERCEDES-BENZ E550 2012 010000 STEERING
MERCEDES-BENZ E63 2012 350000 EQUIPMENT
MERCEDES-BENZ E63 2012 356000 EQUIPMENT ADAPTIVE/MOBILITY
MERCEDES-BENZ E63 2012 013000 STEERING:GEAR BOX (OTHER THAN RACK AND PINION)
MERCEDES-BENZ E63 2012 010000 STEERING
MERCEDES-BENZ ML350 2012 356000 EQUIPMENT ADAPTIVE/MOBILITY
MERCEDES-BENZ ML350 2012 350000 EQUIPMENT
MERCEDES-BENZ ML350 2012 013000 STEERING:GEAR BOX (OTHER THAN RACK AND PINION)
MERCEDES-BENZ ML350 2012 010000 STEERING
MERCEDES-BENZ ML500 2012 356000 EQUIPMENT ADAPTIVE/MOBILITY
MERCEDES-BENZ ML500 2012 350000 EQUIPMENT
MERCEDES-BENZ ML500 2012 013000 STEERING:GEAR BOX (OTHER THAN RACK AND PINION)
MERCEDES-BENZ ML500 2012 010000 STEERING
MERCEDES-BENZ ML550 2012 356000 EQUIPMENT ADAPTIVE/MOBILITY
MERCEDES-BENZ ML550 2012 010000 STEERING
MERCEDES-BENZ ML550 2012 013000 STEERING:GEAR BOX (OTHER THAN RACK AND PINION)
MERCEDES-BENZ ML550 2012 350000 EQUIPMENT

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 (NCU-2019080019) 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.