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2003 BMW 525i A/C stopped working

Tiny
EARTHWORKSCONCRETE
  • MEMBER
  • 2003 BMW 525I
  • 6 CYL
  • 2WD
  • AUTOMATIC
  • 56,000 MILES
A/c stopped working, new blower motor, new fs unit, used light tester, good @ blower motor, good @ fs unit, lights of control panel light up, need help, also checked fuses
Sunday, September 12th, 2010 AT 2:13 PM

3 Replies

Tiny
DOCHAGERTY
  • MECHANIC
  • 9,601 POSTS
How can you be sure the final stage unit is working, did you test it against another known working final stage unit?
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Sunday, September 12th, 2010 AT 9:46 PM
Tiny
EARTHWORKSCONCRETE
  • MEMBER
  • 2 POSTS
Thank you I don't know, how can I test the final stage unit
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Tuesday, September 14th, 2010 AT 4:16 PM
Tiny
DOCHAGERTY
  • MECHANIC
  • 9,601 POSTS
A comparison against a known good working unit is the only test I can recommend due to the fact you have no way to compel the blower fan on with proprietary software. If it is a used unit with LARGE tapered heat sink "teeth" it is questionable.
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Wednesday, September 15th, 2010 AT 8:35 AM

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