TSB: MERCEDES BENZ S350, S400, S550, S600, S63, S65 (2004–2012)

Bulletin LI46-30P054912 — October 29, 2012

Bulletin Details

Bulletin IDLI46-30P054912
ManufacturerMERCEDES BENZ
ModelsS350, S400, S550, S600, S63, S65
Model Years2004–2012
Date IssuedOctober 29, 2012
Date Added to NHTSAFebruary 12, 2013
ComponentSTEERING:HYDRAULIC POWER ASSIST SYSTEM
Vehicles Affected14 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 (XENTRY): AT THE WIRING HARNESS FOR POWER SUPPLY, AND IN COMBINATION WITH NOISES, WITH REDUCED POWER ASSISTANCE WHEN STEERING, OIL IS SEEN AT POWER SUPPLY CONNECTOR OF ELECTROHYDRAULIC POWER STEERING PUMP. MODELS 221 AND 216. NO

Affected Vehicles

MakeModelYearComponent
MERCEDES-BENZ S400 2012 015000 STEERING:HYDRAULIC POWER ASSIST SYSTEM
MERCEDES-BENZ S400 2012 015100 STEERING:HYDRAULIC POWER ASSIST:PUMP
MERCEDES-BENZ S550 2012 015000 STEERING:HYDRAULIC POWER ASSIST SYSTEM
MERCEDES-BENZ S550 2012 015100 STEERING:HYDRAULIC POWER ASSIST:PUMP
MERCEDES-BENZ S63 2012 015000 STEERING:HYDRAULIC POWER ASSIST SYSTEM
MERCEDES-BENZ S63 2012 015100 STEERING:HYDRAULIC POWER ASSIST:PUMP
MERCEDES-BENZ S600 2010 015000 STEERING:HYDRAULIC POWER ASSIST SYSTEM
MERCEDES-BENZ S600 2010 015100 STEERING:HYDRAULIC POWER ASSIST:PUMP
MERCEDES-BENZ S65 2010 015000 STEERING:HYDRAULIC POWER ASSIST SYSTEM
MERCEDES-BENZ S65 2010 015100 STEERING:HYDRAULIC POWER ASSIST:PUMP
MERCEDES-BENZ S350 2007 015000 STEERING:HYDRAULIC POWER ASSIST SYSTEM
MERCEDES-BENZ S350 2007 015100 STEERING:HYDRAULIC POWER ASSIST:PUMP
MERCEDES-BENZ S600 2004 015000 STEERING:HYDRAULIC POWER ASSIST SYSTEM
MERCEDES-BENZ S600 2004 015100 STEERING:HYDRAULIC POWER ASSIST:PUMP

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 (LI46-30P054912) 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.