SLK-interior courtesy light stays on..

LadyPenelope

Active Senior Members
Joined
May 12, 2009
Messages
55
Reaction score
1
Just started happening. The light is a two lamp design with the switches in the middle. Noticed that when you shut the door,light stays on. Also notice the left hand section of the light seems dimmer. Door buttons seem to be popping in and out smoothly. Car has only donr about 24k/4 .5 years old. Any clues please?
 

teddycatkin

Senior Member
Joined
Mar 7, 2008
Messages
2,093
Reaction score
5
Location
cheshire cheese country
Your Mercedes
W107-SL W124-220te W123-230e W201 2.0
Parker should have sorted this by now Lady P. ???--are you sure its not just the delay?
 

turbopete

Senior Member
Joined
Feb 4, 2009
Messages
14,204
Reaction score
328
Age
46
Location
Spennymoor
Your Mercedes
2010 '60' Ford Mondeo 2.0TDCi Zetec (sorry)
could be the switch settings in the light unit itself, the plastic trims that push onto the door button switches are damaged/missing or the delay timer relay has had it perhaps?
 

Miffy

Senior Member
Joined
Sep 6, 2008
Messages
7,356
Reaction score
4
Location
Bromley, London
Your Mercedes
CLK 320 CAB Elegance C208
or that you have manually switched them to stay on, 3 settings, on, switched and off.
 

turbopete

Senior Member
Joined
Feb 4, 2009
Messages
14,204
Reaction score
328
Age
46
Location
Spennymoor
Your Mercedes
2010 '60' Ford Mondeo 2.0TDCi Zetec (sorry)
or that you have manually switched them to stay on, 3 settings, on, switched and off.

thats what i meant by the settings on the light unit itself. sorry for any confusion
 
OP
L

LadyPenelope

Active Senior Members
Joined
May 12, 2009
Messages
55
Reaction score
1
  • Thread Starter
  • Thread starter
  • #6
Hmmm,the switch is definitely in the courtesy position i.e not permanently on but now,,dohhhh,,see my recent new thread,roof not working...Parker has been at work all week and although he has lots of spanners and is quite clever,he is a little bit wary of the sophistications of the SLK as he is used to mending his rather elderly Golf. However I shall jam his head under the bonnet this Sunday to see if anything happens...!
 

5pares

Senior Member
Joined
Feb 25, 2005
Messages
224
Reaction score
0
Location
Suffolk
Your Mercedes
E320cdi
It could be a door switch has been pushed into the b pillar.
 

Dec

Senior Member
Joined
Nov 30, 2005
Messages
3,300
Reaction score
3
Location
Ireland.
Your Mercedes
W202
If item number 5 is missing or loose it would cause the courtesy light to stay on all the time because the door pin isn’t being pushed in when the door is shut, check both doors, below is a different car but you will have a similar set up.

Dec
B_top.jpg

B_bot.jpg
 
OP
L

LadyPenelope

Active Senior Members
Joined
May 12, 2009
Messages
55
Reaction score
1
  • Thread Starter
  • Thread starter
  • #9
I tried pushing in the door pins manually with the door open. I might take them out and check them electrically.
 
OP
L

LadyPenelope

Active Senior Members
Joined
May 12, 2009
Messages
55
Reaction score
1
  • Thread Starter
  • Thread starter
  • #10
Here is the solution.

The car is a 2004 R170 SLK 200.

The problem/symptoms;

(a) Courtesy light inside car did not go out when door was shut. Had to operate the switch on/off using the switch

(b) Light inside boot/trunk did not come on when boot lid was opened.

(c) When the roof operating button is held back,it flashes red and the hydraulic pump can be heard to run but nothing at all happens.

Cause.

Boot lock/microswitch assembly found to be sticking.

Open boot lid and you will see a plastic panel which covers the inner locking assembly.

panel.jpg


The panel is held in place by three plastic rivets. The panel also has two plastic tags left and right which slot inside the metal bodywork to left and right and there is a locator lug on the rear of the plastic panel.

rivet2.jpg


The rivets are of the two part,pry out type.

rivet1.jpg


Carefully,and using a thin bladed implement such as a pen knife,raise the inner rivet pin by sliding the blade under its edge. Pull rivet pin out.

Repeat for all other rivets and lift cover away.

bootswitch.jpg


This now reveals the boot lock and microswitch assembly. The yellow tube carries compressed air to operate the central locking mechanism on the boot lock. To the right on the pic is the microswitch assembly into which the three wires are passing. To the left is the vertical metal rod which links to the boot catch and operating handle. Using some spray lube such as WD40,spray the linkages and operate the boot locking mechanism and handle a few times.

When you shut the boot you should now find that the courtesy light goes out and that the roof will now operate.

The microswitch in this assembly has a number of functions,

It operates the boot light
It forms part of the vario roof control system in that it signals that the boot is shut since the vario roof can only operate when the boot is shut.
 

Comand Online Ltd is a specialist supplier of Mercedes Navigation Disks, Phone & Bluetooth, iPod, DAB, CD and other COMAND retrofit parts to enhance your vehicle.www.comandonline.co.uk
Top Bottom