- Joined
- Sep 16, 2004
- Messages
- 1,145
- Location
- Leven, Fife / Northampton
- Car
- 2006 320 CDI Avantgarde . 1997 312d Sprinter
Hi,
Key Fob has stopped opening and closing the locks, also no AM radio and FM is weak.
I have changed batteries in the key fob, and checked the 7.5 amp,fuse 8, on the rear SAM that supplies the Aerial/ Antenna Amplifier.
Voltages on the 3 wires from Sam to A. Amp (Ign off ) were Red/Yellow 11.4, Pink/ Blue (radio on ) 11.96 and Grey /Yellow 11.70. I ordered a replacement Aerial amp from Ebay ( A2118202989) which came today (weds ). Took the dog for his walk this morning and Fob opened and closed locks, still no AM radio, LW or SW ....BUT Radio 2, Radio Scotland, and others previously missing, were now back.
So I checked the voltages when I came home. R/Y 12.49, P/B (radio on ) 12.12 and G/Y 10.00.
Postie arrived with replacement part, so fitted this and again measured voltages. R/Y 11.47... P/B 11.99 and G/Y 10.7.
FM radio working as normal, now some white noise on AM but no stations, Key fob generally not working still, although once or twice it did. Also I tried Syncing key to lock, but no great improvement.
So where to go next?
Most other cases of this seem to have been resolved with a replacement Aerial Amp, but obviously not mine.
I have used this very useful blog to assist and fault trace :-
JB Service: Mercedes W211 E 500 estate, 2004. RF unlocking the car is not working.
Useful comments welcome, Thank you
Steve
Key Fob has stopped opening and closing the locks, also no AM radio and FM is weak.
I have changed batteries in the key fob, and checked the 7.5 amp,fuse 8, on the rear SAM that supplies the Aerial/ Antenna Amplifier.
Voltages on the 3 wires from Sam to A. Amp (Ign off ) were Red/Yellow 11.4, Pink/ Blue (radio on ) 11.96 and Grey /Yellow 11.70. I ordered a replacement Aerial amp from Ebay ( A2118202989) which came today (weds ). Took the dog for his walk this morning and Fob opened and closed locks, still no AM radio, LW or SW ....BUT Radio 2, Radio Scotland, and others previously missing, were now back.
So I checked the voltages when I came home. R/Y 12.49, P/B (radio on ) 12.12 and G/Y 10.00.
Postie arrived with replacement part, so fitted this and again measured voltages. R/Y 11.47... P/B 11.99 and G/Y 10.7.
FM radio working as normal, now some white noise on AM but no stations, Key fob generally not working still, although once or twice it did. Also I tried Syncing key to lock, but no great improvement.
So where to go next?
Most other cases of this seem to have been resolved with a replacement Aerial Amp, but obviously not mine.
I have used this very useful blog to assist and fault trace :-
JB Service: Mercedes W211 E 500 estate, 2004. RF unlocking the car is not working.
Useful comments welcome, Thank you
Steve