Hello,
So I decided to fix a small on going problem with the right rear door on my Jaguar. So what is going on is that when the right rear door and only the right rear door is opened it causes the dome light relay in the right left foot well(blue relay with yellow socket) to osculate about once a second, some times a little quicker to almost a buzzing relay some times a lot slower. If any other door is also opened or opened by itself it causes the relay to not behave like this. So the issue is just the right rear door. Didn't see any obvious door switches anywhere in the door hinge or door jam area, so I figured it is somehow internal just like the trunk (boot) light is to the lock. Took the interior panel off to see but have not found anything. As I need to change that speaker anyway it is not a waste of work, but can anybody tell me what i need to do to fix it or refer me to a page in a manual that will help me fix this? I think it also causes my alarm to randomly go off sometimes also even when all doors are closed. Thank you for any help anybody can provided.

 

The switch is inside the latch assembly itself. It's a very small micro-switch, maybe .675" x .675"

I had this problem a couple times on two different doors. I was never able to find a replacement switch....but this was many years ago.

However.....

I was able to restore correct operation by cleaning the switch with aerosol contact cleaner. The switch has a plunger with a small rubber boot. Removing the boot allows the aerosol to get into the switch itself. I used a glob of heavy grease to 'reseal' the plunger...as the boot is destroyed during removal.

Removing the switch for cleaning means removing the latch assembly. I recall this being very easy on the front doors but quite difficult on the rear. It was too along ago, though, for me to remember any details as far as latch removal goes

Cheers
DD

 

I had a similar issue with random alarm triggering (but not with relay buzzing) which I traced to RH Rear door with the help of IDS. I found that a connector for the handle/lock was a bit corroded. Cleaned it up with contact cleaner and a stiff brush and has been good for a couple of years now. Pictures attached of before and after cleaning.

 

A Big Thank you Doug. That was it, and fixed it by spraying WD40 and electrical cleaner into the switch with the plunger pressed in, then just put the whole thing back together. Thank you for the great advise.

 

Glad it's all sorted !


Cheers
DD