It's on the rear coolant flange way in the back by the firewall.
If you have a 1999 Passat V6, the coolant temperature sensor is located in the lower radiator hose.
location bank 1 sensor 1
VOLKSWAGEN PASSAT 1998-ON 5x112
where is the transmission fluid dipstick on a 1999 volkswagen v6
To change the light bulb for the ashtray in the 1999 Volkswagen Passat, the ashtray has to be taken out. The bulb can be accessed just under the dash near the ash tray.
in the lower right side when you stay in front of the car
How much it cost to put a transmission in a 1999 passat
the microswitch that operates as a sensor is apereantly inside the lock mechanism in the door: http://www.taligentx.com/passat/maintenance/doorlockmechanism/
Most likely cause is a faulty coolant temperature sensor.
1-3-4-2
Depends on engine size. usually a 10mm socket. to remove bolts or a #6hex key
where is the coolant temperature sensor located in a 1999 cadillac seville sls?