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Service bulletin 21992

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 id606315
Published by NHTSA1999-08-16
Manufacturer's number21992
Manufacturer's date1999-05-11
NHTSA componentUNKNOWN OR OTHER

NHTSA's summary

A CONDITION MAY EXIST WHERE CODE P0450 AND / OR THE CHECK ENGINE LIGHT IS ON. CLK320 CABRIOLET (208.465) AND CLK430 CABRIOLET (208.470) *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.

Trouble codes named

P0450

Vehicles listed
MERCEDES BENZ CLK320 CABRIOLET
MERCEDES BENZ CLK430

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