Question about 2003 Audi A4 Cabriolet
CD works fine but no radio reception (or very poor with lots of hiss). Wasted £200 replacing both boosters in the boot lid but problem persists. If I touch the coax inner core with metal object then reception is perfect (which is why I assumed it was the boosters) but plugged into booster it does not work. I assume that there is a break in cable so no power to booster but central coax is fine when I act as antenna (if that makes sense). I assume that part of teh coax is a power supply and its that which is bust - can anyone confirm
Any suggestions apart from paying huge sums for Audi to re-wire.
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Posted on Jan 02, 2017
The aerial is in the boot lid. A wire runs down through a thick corrugated tube. Many bends over time fatigue and break the wire. I simply found the break and repaired the wire , coax wire, repositioned the wire fine! Audi do a replacement around £100 that goes all th way to the radio!
NB handle in boot lining has a hidden screw that must be removed to pop off lining.
Posted on Oct 11, 2008
SOURCE: bad brake booster
If you know for sure that the booster has failed, you need to unbolt the master cylinder from it, (sometimes you can move it away enough to not even disconnect lines.) Then unbolt the booster from the firewall, disconnect the pedal linkage if connected to booster. Remove & replace booster assembly and everything else you you took off. If you didn't have to remove master cyl you are done. If removed, bleed master before putting back into service!
Posted on Jan 09, 2009
do you get any stations, even weak stations on the AM band? If not you have a bad radio and need replacement. Try having someone hold the antenna as you scan the AM band.
Posted on Apr 01, 2009
undo the the vacuum hoses and make sure you make a diagram of where each hose goes. move them out of the way.
undo the four bolts that attach the master cyclinder to the booster. use a wire coat hanger or just wire to support it. you don't want to bend or break the brake lines.
undo the four bolts that hold the booster to the firewall. carefully pull it away from the firewall. you will see a small are there with a clip. remove the clip and unhook the arm.
reverse those instructions to put it back together
However BEFORE you do that. Make sure that none of the vaccuum hoses are leaking.
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Posted on Sep 04, 2009
Testimonial: "appreciate your feedback soo much.i was afraid that i have to go under the dash on the inside of the car but your instructions are pretty simple.thk u"
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