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Service bulletin 188

A bulletin is a manufacturer's communication to its dealers, as NHTSA indexes it. The summary is NHTSA's. The document is the manufacturer's: read it at NHTSA. A bulletin is not a recall, and listing a model year does not mean every vehicle of it is concerned.

The communication, as NHTSA indexes it (as of 2026-10-19)
TypeService bulletin
NHTSA id605743
Published by NHTSA1999-07-22
Manufacturer's number188
Manufacturer's date1997-06-02
NHTSA componentENGINE AND ENGINE COOLING:ENGINE:GASOLINE

NHTSA's summary

INFORMATION ON PROTECTIVE WAX IN THE ENGINE COMPARTMENT. *TT

The document

No address for NHTSA's copy can be built for this communication. Ask the dealer for it by the manufacturer's number.

Components

Engine

Vehicles listed
MERCEDES BENZ 1291997
MERCEDES BENZ 1701997
MERCEDES BENZ 2021997

Listing a model year does not mean every vehicle of it is concerned: the document says which.