QuestionQUESTION: My driver side heated seat is not working. The fuse is OK. I can hear the clicking sound on both sides (front seats) and the passenger side is good. According to the manual, it does not label anything about heated seat relay locations. Please help. Many thanks!
ANSWER: John,
Just so you know, there are 3 fuses that contribute to the seat heater circuit. It's possible that the fuse that powers the relay is good yet the fuse that supplies the power that the relay controls is not. The relays for both seat heaters are located under the left side of the dash. Since they are clicking, they should be easy to locate.
---------- FOLLOW-UP ----------
QUESTION: Thank you for your curtious response.
Here is what I know. The relay clicks and I had trouble earlier in winter and I had to push the buttom many times to turn the light on (to heat up the seat). But a month ago, it quit working. Now, the indication light can not be turned on any more. I found the location based on the drawing I found. However, Cadillac dealership does not carry the relay. Through the third party, they want $70+ for a relay. My questions for you are, 1. which fuse should I check for supplying the power to relay. And, it I had trouble earlier on relay, does it mean it is no longer working even it clicks?
Thanks again!
AnswerJohn,
Forgive me if this is a little elementary for you but in a forum like this, it's virtually impossible to have an idea of the skill level of a person asking a question of you.
A relay is simply a device that allows you to control a high-draw device with a relatively small switch. This is done by the relay having two basic circuits; a control circuit (the low amperage circuit) and the load circuit (the high amperage circuit). In your case, the low amperage circuit is obviously working since you hear the relay click. Now for the high amperage circuit. You must have a second 12+ supply to the relay (usually a heavier gauge wire), and a load side, which grounds via the actual high amperage load (in this case, the seat heater). So you need to verify that there is a power circuit to the relay that will be switched for the heater grid, that it is connected to the heater grid, and then that there is a good ground connection on the other side of the heater grid. It's really just that simple.
