Both the power windows and the entire control panel for the heat, air, and defrosters quit working, at first it was a problem that happend at random times but after about a week now they don't work at all. The thing possibly leading up to this was the battery becomming disconnected a few times. I thought that it may be a problem with a relay but after rotating a couple of relays the problem was not fixed. Any suggestions?
2000 HVAC and power windows not working
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Check your fuses. Sounds weird but it might work and won't cost you anything but time.
1. Pull each fuse out, no cheating! Pull them one at a time and check the fuse by looking through the sight window at the actual fusible link section to make sure it's still in good shape.
1a. If it's kinda warped and multi-colored then it has been run at high current for a long time and you need to replace it soon, plus find out what is drawing too much current in the first place.
1b. If it's separated then it's blown and needs replaced.
2. Check the legend on the cover and match its rating to the socket you just pulled it from.
2a. If it's not the same then replace with the correct one. NEVER go oversized unless it's an emergency and you have to get to the parts store to correct it.
2b. To replace the fuse don't just assume that the number on it indicates the right one, either. Again, check it with the legend.
3. If the fuse seems okay, then use some emery cloth to clean the spades that plug into the socket, cleaning both sides. When clean they'll look kinda like satin, or dull.
4. Once done, check your relay connections as well, especially if a lot of fuses were quite corroded.
The biggest reason I suggest to check your fuses is because the car is 10 years old and two different circuits are not working. It could also be a power relay that has failed or has a corroded connection. That's a relay that turns on or off when signaled by the key, supplying or removing power to certain circuits.
1. Pull each fuse out, no cheating! Pull them one at a time and check the fuse by looking through the sight window at the actual fusible link section to make sure it's still in good shape.
1a. If it's kinda warped and multi-colored then it has been run at high current for a long time and you need to replace it soon, plus find out what is drawing too much current in the first place.
1b. If it's separated then it's blown and needs replaced.
2. Check the legend on the cover and match its rating to the socket you just pulled it from.
2a. If it's not the same then replace with the correct one. NEVER go oversized unless it's an emergency and you have to get to the parts store to correct it.
2b. To replace the fuse don't just assume that the number on it indicates the right one, either. Again, check it with the legend.
3. If the fuse seems okay, then use some emery cloth to clean the spades that plug into the socket, cleaning both sides. When clean they'll look kinda like satin, or dull.
4. Once done, check your relay connections as well, especially if a lot of fuses were quite corroded.
The biggest reason I suggest to check your fuses is because the car is 10 years old and two different circuits are not working. It could also be a power relay that has failed or has a corroded connection. That's a relay that turns on or off when signaled by the key, supplying or removing power to certain circuits.
I concur with DD on the fuses. According to the 2000 owner's manual, the fuse labeled "Climate Control System" in the engine compartment fuse block could be for the HVAC control head.
The power windows (not to be confused with power locks) are powered through a circuit breaker labeled "CIRCUIT BRKR PWR WNDWS" in the left instrument panel fuse block. A circuit breaker is supposed to open when the current draw is excessive and then close once the draw is no longer. In order for things to work, the hot side of the circuit breaker has to have power, the circuit breaker is closed, and there isn't a short on the power windows side.
The power windows (not to be confused with power locks) are powered through a circuit breaker labeled "CIRCUIT BRKR PWR WNDWS" in the left instrument panel fuse block. A circuit breaker is supposed to open when the current draw is excessive and then close once the draw is no longer. In order for things to work, the hot side of the circuit breaker has to have power, the circuit breaker is closed, and there isn't a short on the power windows side.
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