Turns on no sound

not told why (the job) rats eat the wires or what?
no country of vin told
nor which of 5 to 10 audio head engine sound system radios
is there now or if aftermarket not from Jetta VW
the USA car this wiring is in the service manual
but is 1 or more page for each of 5 to 10 radios VW used
see???????????
ours are here

https://eautorepair.net/Marketing/Default.asp

welcome to WWW wide world web, where anyone can post
then fails to tell country or VIN, and is 99% of the post here
and the all time reason for wrong answers./
for cars here we
for newer radio
we use these

https://www.scosche.com/car-audio/installation/harness

it can be any number of things, diagnostic equipment is required to find fault code

Sometimes when you jumpstart you can change the polarity which maybe why your radio dont work anymore

This seems to be a common problem with this series of radio. If you open the drivers door and pop the fuse panel cover off the side of the dash, then locate fuse number 42 ( should be 25 amp). Remove the fuse, check to see if it is blown(it usually isn't), if it isn't blown leave it out for about 30 seconds to 1 minute and then reinstall. Hope this helps it worked on my 02 Jetta TDI.

if the fuses are numbered, the radio fuse is number 42.

well of corse its a VW the really only want the official radio that cam with the car.. you have to talk to a dealer and its a universal code they have them

I have this same issue, it is not code related, I have a code and the radio works just fine WHEN THE CAR IS OFF. As soon as the engine starts, the radio loses power, did you ever find a solution to this?

the radio fuse is located on the back of the radio<it is a 10 amp red spade type>

look for an emergency pull cable in the boot (trunk) it should have one

Fuse number 42 is for the radio reset. Pull it out and put it back in. It's a warranty problem, expired now no doubt.