2001 BMW 525i No heat coming from vents and engine temp goi

2001 BMW 525I
83,000 MILES • 6 CYL • 2WD • AUTOMATIC
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AIANCROATIAN
  • MEMBER
  • 1 POST
Driving my car this morning I noticed that although I had the heat on, no heat was blowing from the vents. Only cool air was coming out. After driving for about ten minutes more I noticed the temperature indicator for the car jumped the the 3/4 mark and then proceeded pretty quickly to the red zone. What causes this? Is the thermostat not working or is it simply a question of adding more coolant?
Feb 28, 2010 at 11:57 PM
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DOCHAGERTY
  • ✓Experienced Mechanic
  • 9,606 POSTS
An immediate inspection is in order, when cooled of course. Low coolant can mean it's leaking somewhere and will present as you have suggested.
Mar 1, 2010 at 3:06 AM
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