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Heated seat not working

Tiny
ERIC ALRIDGE
  • MEMBER
  • 2003 CADILLAC CTS
  • 3.2L
  • 6 CYL
  • 2WD
  • 190,000 MILES
Where is the fuse for the driver side heated seat? It’s not working when I push the bottom it pops up on the screen but seat not getting hot.
Saturday, March 7th, 2020 AT 12:54 PM

4 Replies

Tiny
ASEMASTER6371
  • MECHANIC
  • 52,797 POSTS
Good afternoon,

I attached the location of the fuse for you along with the diagram.

Test for power to the fuse with a test light or voltmeter.

Roy
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Saturday, March 7th, 2020 AT 1:49 PM
Tiny
STEVE W.
  • MECHANIC
  • 13,494 POSTS
While it could be the fuse it is much more common for the heating element itself to be bad. The fuse is in the left side fuse block under the rear seat. A quick way to test it is to look under the front seat and find the seat control module. There will be two connectors. You want the 4 pin one. It has the temperature sensor and the heater wires in it. You can use a test light connected to ground to probe the 4 pins, you should find power on pin A. With the seat heater on. Pin B is a controlled ground, if you connect the test light to pins A and B it will change brightness if you select between off low and high.
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Saturday, March 7th, 2020 AT 1:54 PM
Tiny
ERIC ALRIDGE
  • MEMBER
  • 26 POSTS
Thanks.
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Saturday, March 7th, 2020 AT 2:36 PM
Tiny
ASEMASTER6371
  • MECHANIC
  • 52,797 POSTS
You are welcome.

We are always glad to help.

Roy
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Saturday, March 7th, 2020 AT 2:48 PM

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