2002 Mercedes-Benz E430 Repair and Maintenance
A guide to problems, costs, maintenance and repair for your 2002 Mercedes-Benz E430
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2002 Mercedes-Benz E430 ProblemsReplace air filter when replacing failed mass air flow sensor
The mass air flow sensor tends to fail causing poor fuel economy and Check Engine light illumination. The engine air filter should be replaced when the mass air flow sensor is replaced; a dirty filter can allow debris to damage the new sensor.
An engine oil leak may develop from the oil level sensor. Replacement of the leaking sensor will commonly correct this concern.
The evaporator temperature sensor can fail, causing the AC compressor not to cycle. If the AC compressor does not turn on, the AC system will not blow cold air. If the compressor is stuck on, the air will be very cold at first, before warming up.
2002 Mercedes-Benz E430 QuestionsWhere is the evaporator temperature sensor located? (2 answers)
When we turned the AC to cool this morning, only warm air was blowing. I tried to charge the unit but the pressure on my gauge started climing up to 100. I shut the motor and the freon tank valve and left the connector attached to the low pressure valve. The "dead" pressure stayed at...