Question about 2002 Volkswagen Passat
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Posted on Jan 02, 2017
P2181 is a overheating engine.
Bad fan themoswitch, temp sensor themostat water pump impeller fan motor or fuse on battery
check to see if fans work by turning on Air Conditioner (fans should run with A/C on). Turn A/C off, warm engine, check to see if fans come on, if they do NOT it may be thermo switch on radiator on lower left side, has 3 wire plug, takes 1-1/8" wrench/socket to remove. This thermo switch controls fans when temp reaches 195F, if fans do not come on at engine temp 190-195F try replace switch VW part number: 1J0-959--481-A You can verify if the switch is bad by shorting wire 1 and 2 (fans should come on when jumpered).
Posted on Oct 26, 2008
SOURCE: need relay location
relay 1 engine compartment
fascia 2 relay 18 (if it is diesel) relay 10 (diesel again) and this could likely be the best candidate relay 4 fuel pump relay/glow plug relay
Now for the fuse box locations ... looking from the front of the car... the engine compartment fuse box is on the left side up near the firewall.
fascia two is the lowest of the two fuse panels on the drivers side under the dash to the right of the steering column (left if it was a right hand drive).
This took about 15 minutes to locate all the possible fuses, be that as it may if i missed it don't hesitate to ask me again.
Please take a moment to rate this solution thanks
Posted on Feb 17, 2009
Could be just the OIL COOLER. VW IS CORRECT.
If the oil cooloer fails internely you will have a mix of coolant and oil. In the engine and in the Radiator,
But not to say the other guys were wrong...
Posted on Jun 18, 2009
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