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
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  • 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?
Mar 1, 2010 at 7:57 AM
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DOCHAGERTY
  • ✓ASE Certified Mechanic
  • 9,606 POSTS
  • ASE Certified Mechanic
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 11:06 AM
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