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Window & Roof Breakers

Window & Roof Breakers

Jack Fulford & Tom Wagner

Jack Fulford wrote:

I need help desperately!!! On the way home from church yesterday, I rolled down the rear drivers side window, and opened the sun roof. A few minutes later, I tried to open the front drivers side window, NOTHING. I then tried to close the sunroof, NOTHING, I tried to close the rear drivers side window, NOTHING. Both windows on the passenger side work fine.

I suspected a fuse blown. All the fuses in the underdash fusebank are good, all the fuses in the underhood fuse bank are good. I took apart the console and found two "inline fuses" they were both good (one of which went to the radio as now it flashes "CODE", I guess this means a trip to the dealer). Is there another fuse some where?? Is there another explanation. This car is my transportation to work and during this thunderstorm prone time of the year in Texas, being stuck with an open window and sunroof are a bad thing. Please help!!!!

Tom Wagner replies

Windows and sun roof are powered by circuit breakers and a master relay. Two breakers are used. The one you have defective powers the sun roof and the Left side of the car windows. The other one powers the right side windows. The master relay controls both. They are flat devices, about 1.5" square, and 3/8" thick. Black, two terminals. Take off the passenger side cover (where the fuse box access is) and they are mounted on the metal panel next to the fuse block. They are not resettable, they are supposed to go when overloaded then cool down. I suspect the breaker is ok, the wiring connections to it may be bad.

If the master relay went you would have lost all the windows. It is also on the panel, the furthest round relay at the right top. It has 4 terminals.


Jack Fulford follows-up:

Thanks very much to all who responded to my plea for help. The problem was solved as follows: There are 2 circuit breakers located just to the right of the passenger side fuse box. The are about 1" long x 3/4" wide x 3/8" thick, black in color and each have two spade connectors sticking out the top w/ red wires (white stripe) attached. One of these breakers is attached to BOTH of the passenger side windows (LHD) and the other breaker is attached to the BOTH of the drivers side windows AND the sun roof. If one of the breakers fails then everything attached to it ceases to function.

To access the breakers, it is best to remove the under dash cover from the passenger foot well. A "0" Ohm Ohm meter reading when applied to each of the spade connectors will tell you which one is bad. Replace the bad one by removing the two phillips head screws attaching it to the metal plate and putting in the new on that you just purchased for $60USD from your local Jag Dealer. If you need to quickly get your windows rolled up then you can just switch the two wires from one breaker to the other. DON'T MIX up the wire pairs.

Thanks again to all who provided great advice and assistance.


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