Radio went dead. Checked fuse (no.37), fuse was ok. When I put the fuse back in the radio worked again. It did this a few times but now it won't come on at all. I diconnected and reconnected the battery but that made no difference. Any suggestions. Thanks in advance.
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Re: 2001 A4 Radio quit working
It is possible that the fuse connection has lost its tension, I have seen this more than once, the fix is to take a fuse and carefully thicken the blades with solder. U can check the fuse for continuity by using a test light and seeing if both sides of the fuse light the test light bulb, if not the fuse box contacts are defective.
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You did not state whether you have the base radio or the premium radio but you need to check the 15A CIGAR FUSE and the 10A ROOM FUSE in what Mazda calls the joint box. If you have the premium radio, you need to check the 10A AUDIO FUSE also.
Wiring schematics are your best friend at this point. Locate the ground circuit for the stereo (first on the schematic, then physically on the vehicle). For a component to receive "partial power" but not function as intended, the ground circuit is the best place to look. A corroded ground or a splice or crack in the ground wire should be the cause of your problem.
Actually pull out the radio fuse for 15 seconds and then re-install. Mine usta just quit working once in a great while, and this was the fix. Radio fuse #42 if this is a "New Jetta A4 body" or fuse # 22 on an older "A3 body style"
most new BMW's the fuse block is located behind the glove box. There should be a pair of twist plastic fastners at the back of the glove box, twist and remove the plate and you should find the fuse box and fuse locater list.
it sounds like the Multi information display has failed (MID). It is the long display with all the radio controls on it. If you want to find a known good part they are really easy to swap out. Just remove the radio knob and if you look down in there, there is a place to put a T10 (i think maybe bigger or smaller) torx T10 screwdriver.if you turn it while pulling back slightly on the screwdriver it should come right out. It usually is the component that fails but as always you may want to check your fuses.
does your system have power amplifier aside from your built in amp on radio? if yes, disconnect all supply then put new fuse. try this time, should not blow the fuse. then one by one, connect the supply fo your radio only, if ok, then next is the amplifier, if it blow the fuse, your power amplifier has an issue.
Ok so I did resolve the problem with my radio. I pulled the fuse out thinking maybe replacing that was my first step. I didn't have a spare fuse of that kind, so I just put the fuse back in. And my radio started working! Start with the fuse, if that doesn't work the radio prob needs to be replaced.