Hello!
When opening a door no courtesy lights doesn’t switch on any more. They now only separately works when switching them each manually on the ceiling.
But when I leave the ignition key in the slot after shutting down the engine and all electricity, I can not leave the car -thus open a door- without the car still produces the tipical flashing warning sound. So I don’t think any of the 5 door contacts is faulty.
But where has I to start to resolve the problem ? Where under the facia -or side footwells ?- is located the culprit ?
Thanks for leading me by the right track (of investigation) !
My Landrover is a Discovery Tdi -manual gear- from may 1998 with 177.779 kilometers
Greetings,
PierroDisco (from Belgium)

 

Could be one of the solenoids attached to the ignition key barrel or the MFU. Sorry to say, you are in for some long hours staring at the electrical manuals/diagrams.

 

Hello Walt,

The rear wiper doesn’t work no more for a little month.
I first thought to check the fuse and the wipermotor.
But now I may think it is the MFU to.
First of all I’ll check the LFU connectors (corrosion, grease etc.)

I’ll inform about my progress !

 

a multi meter will be a huge help.

 

Hello,

In



meantime I put away both kick panels. As you can see on the pictures there is at both sides a serie if three relays (2 yellow, 1 green). On the passenger side (left hand driving in Belgium) there’s a fourth relay also in yellow. What are they for ?
How can you detach those relays ? I didn’t dare to pull to hard.

I unscrewed the MFU but here the same problem : how to detach each connector without endommaging them ? The same for the black Lucas-relay on its front.

Both ground pins at both sides were unscrewed : all blinking metal without any trace of rust, but the same problem : I wasn’t able to detach the connector.
Also all the fuses on the MFU and both his satellites, and those on the fusebox in the engine bay are good (no trace of any rust or burning on each bridge)

Can somebody help me by answering my questions ? Thanks !
(all this just to restore the working of :
- the rear whiper
- the radio and
- the interior lights switching on/off automatically !!)

Greetings from Belgium,
PierroDisco

 

Hello,

Yesterday I successfully detached all the necessary connectors from the fuse board to take away the cover off from the MFU himself.
The inside was very clean, no signs of any rust or water ingress. Idem dito for the visible contacts on all the unplugged connectors, especial these on the back of the fuseboard.
I think it would be strange that such a clean spotless MFU should be the culprit ?
Has someone another idea ?

Thanks,
PierroDisco from Belgium

Spotless inside of MFU ; no signs of rust.

 

it could be the solenoid on the ignition barrel has failed

 

Hello,

Last question.

For radio, rear wiper and courtesy lights not working :
At which detail can OnBoardDiqgnostics be useful to diagnose which electric compound is the culprit ?

Greetings,
PierroDisco