Fan troubles...
hannaco said:
There are resistors on the board that the fan switch is fastened to. Check to see if they are all OK. You will have to pull the front of the dash off to get to them.
Only the interior blower motor has a resistor pack to protect against thermal over load. The fans refered to in these posts are the 2 front end radiator cooling fans.
These fans are operated by the fan module. The fan module recieves its temp. info. from a totally seperate temp. sensor thats mounted to the lower drivers side of the radiator itself. It can be removed and replaced with-out draining the coolant. In order to really check all that module out, a VAg-COM scan for that and related components should be done. In lew of that being done, the fan module temp. sensor can be checked by unhooking the connection to it and using a plain jumper wire, bridge the red wire to the red/white wire. Both fans should run on the first speed. Next jump the red-yellow wire to the red wire.. Both fans should run at high speed. If the fans run, it may indicate the temp. sensor is bad. Of course before jumping any connections, fuses #3 and #8 in the fuse box on the top of the battery should be checked. # 16 fuse should also be checked that is located in the end of dash drivers side fuse panel. If all these measures fail to locate the problem, then a VW VAG-COM scan is indicated. The cooling fans are interfaced with many different components, including the A/C system. I suspect a bad temp. sensor or a failed fan thermal switch. I think the fan module is ok, but it could also be the root cause of this problem. Good Luck, JK