Rear Speakers in Golf MK5 are not working

This worked for me on 2008 Mk5 Golf, after the rear passenger door would not open fro outside or inside.

Hold the inside door latch open and keep it extended, then with the key fob open and close the door locks (still holding the inside latch open). Keep locking and unlocking the door, then it made a kluck and it released.

check to see if the ground wire is making good bare metal contact on the trailer.

Sounds like you speaker is blown, open and replace or switch speakers if still happening then radio is damaged.

You dont say what age the golf is.If it is a Mk5 then the rear lock motor will have failed-common fault

Although you posted this question under a 03 VW Golf and you have a MKV. The best I can do is a MKIV set up. From the rear trunk there are access ports just for this job. The right port will be just above the light housing you will find a wire harness for the right assembly. Follow the harness and it will lead you to the assembly. Once located you can squeeze the two tabs and pull the circuit board where the bulbs are installed. Push on the bulb and twist anti-clockwise then pull out of the socket.

The left should be the same procedure and it is located behind your audio components.

NOTE: It's a good idea to wipe your hand and the glass bulb, leaving oily residue will cause early bulb failure once in operation.

If your Golf is the premium sound model here is the list:
2001 Volkswagen Golf Car Radio Wiring Schematic for Monsoon Audio
Car Radio Battery Constant 12v+ Wire: Plug #3, Pin #7
Car Radio Accessory Switched 12v+ Wire: Plug #3, Pin #4
Car Radio Ground Wire: Plug #3, Pin #8
Car Radio Illumination Wire: Plug #3, Pin #6
Car Stereo Dimmer Wire: N/A
Car Stereo Antenna Trigger Wire: N/A
Car Stereo Amp Trigger Wire: N/A
Car Stereo Amplifier Location: N/A
Car Audio Front Speakers Size: N/A
Car Audio Front Speakers Location: N/A
Left Front Speaker Positive Wire (+): Plug #2, Pin #5
Left Front Speaker Negative Wire (-): Plug #2, Pin #6
Right Front Speaker Positive Wire (+): Plug #2, Pin #3
Right Front Speaker Negative Wire (-): Plug #2, Pin #4
Car Audio Rear Speakers Size: N/A
Car Audio Rear Speakers Location: N/A
Left Rear Speaker Positive Wire (+): Plug #2, Pin #7
Left Rear Speaker Negative Wire (-): Plug #2, Pin #8
Right Rear Speaker Positive Wire (+): Plug #2, Pin #1
Right Rear Speaker Negative Wire (-): Plug #2, Pin #2
Signal for Anti-Theft Alarm System Wire: Plug #3, Pin #1
Data Link Connector (DLC) K-Wire: Plug #3, Pin #3
Battery Supply Constant 12v+ Wire for Anti-Theft System (SAFE): Plug #3, Pin #5
CD Changer Data In Wire: Plug #1, Pin #13
CD Changer Data Out Wire: Plug #1, Pin #14
CD Changer Clock Wire: Plug #1, Pin #15
CD Changer Constant Battery 12v+ Wire: Plug #1, Pin #16
CD Changer Control Signal Wire: Plug #1, Pin #17
CD Changer Ground Wire: Plug #1, Pin #18
CD Changer Left Line Out Wire: Plug #1, Pin #19
CD Changer Right Line Out Wire: Plug #1, Pin #20

Amp should be in the trunk up near the rear glass or if a wagon under the rear plastic panel..... If no amp then I would suspect a bad wire under the carpeting on driver's side.........

hi. i have a mark 5 golf gt tdi the air con doesnt work just had the air con gas checked and topped up no leaks.any ideas.

In hot weather you will hear the Aux fan running. It can be very loud sometimes.

what would be the door speaker size for golf 1999 model rear & fr