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The one little round headlight on the right of my main headlight is out, how do I replace it?
Problem for Volkswagen 2003 Passat
Passat code p02181
Best Solution
posted on Oct 31, 2009
How old is the Coolant Temperature Sensor (CTS)? The CTS have been
know to fail, don't rule it out. After that, there's the thermostat and
possible water pump. The pump would be your last choice since you did not say
it was over heating and the effort required to replacing it. Go with the
sensor first, it is a 2 part sensor, and apparently the half sending
signal to ECU isn't working correctly according to the ECU.
Replaced the sensor ($43 from my local VW dealer: ouch.) Once you the parts in hand, and the engine was cool enough, it takes all of two minutes (less time than it takes you to replace one of the windshield wiper's rubber; who designed that damn thing????). Then replace the Thermostat 190F and cleared the check engine light.
Good luck and this should solve your P2181 Issues.
Replaced the sensor ($43 from my local VW dealer: ouch.) Once you the parts in hand, and the engine was cool enough, it takes all of two minutes (less time than it takes you to replace one of the windshield wiper's rubber; who designed that damn thing????). Then replace the Thermostat 190F and cleared the check engine light.
Good luck and this should solve your P2181 Issues.
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