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Service bulletin 04M992

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 id603945
Published by NHTSA1999-03-12
Manufacturer's number04M992
Manufacturer's date1999-01-20
NHTSA componentVISIBILITY:DEFROSTER/DEFOGGER/HVAC SYSTEM:HEATER CORE; VISIBILITY:DEFROSTER/DEFOGGER/HVAC SYSTEM

NHTSA's summary

SOME ML320 MODEL VEHICLES MAY EXPERIENCE INSUFFICIENT AIRFLOW FROM REAR AIR OUTLETS. *YC

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

Glass, wipers and mirrors, Heating and air conditioning

Vehicles listed
MERCEDES BENZ MERCEDES BENZ
MERCEDES BENZ ML320

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