Question about 2004 Volkswagen Passat
Hi I have a 2004 VW passat and the heater has gone out. When it is first turned on it will blow warm air for a few seconds then it turns cool. Help???
COLD AIR WHEN IDLING COULD BE...
1) Low on coolant - the most common reason for this heater problem. Make sure your coolant level is full.
If the level is low, it could be because the radiator cap is not sealing well or it could also be a cracked overflow container (hot coolant that bleeds out of the engine and drops to the street so you never see the puddle on your driveway).
2) An air-lock in the coolant system - it needs to be burped. Park your car facing-up the steepest hill you can find. Remove the radiator cap a (be careful - best to do when engine is cold) and rev engine to 2000 RPM for 60 seconds - hopefully the air will burp out the cap. Top it off with 50/50 antifreeze.
3) A disconnected or cracked vacuum line. I've heard about this one but never investigated.
Posted on Feb 28, 2009
Is the car comming up to opperating temp? If it is it may be low on coolant. If not it may be the thermostat is bad.
Posted on Dec 08, 2008
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Posted on Jan 02, 2017
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