golfbgud Registered User
#1

Hi All,

2005 PASSAT TDI (Not the latest model - last of the 2000-2005 model).

I had the interior lights set to come on when I take the key out of the ignition (and vice versa). This was a huge benefit.

Recently this has stopped working (the switch beside the rear view mirror is still in the correct position).

I can switch on the drivers side lamp or passengers side lamp manually so it's not a bulb problem.

When I open any of the doors the lights on underside of the doors all work OK.

In summary, all the interior lights appear to work independently/manually. Could the switch itself be gone faulty even though I never change teh position of it?

Thanks - Gerry.

golfbgud Registered User
#2

Anyone?

bbk Registered User
#3

By set the lights to come on when you took the key out you mean you used the selector over you head to do this?

If it is this Passat or the facelifted one


then that lighting switch is a very weak design. The actual mechanism can go on them and cause the lights to feck up.

The lights in my Golf (they share the same lighting cluster) never worked for about 9 months after I bought the car and once I started trying to figure it out I found that a bit of metal had become dislodged and was causing shorts etc.

http://cgi.ebay.ie/VW-PASSAT-INTERIOR-ROOF-SUNROOF-LIGHT-SWITCH-UNIT-/360227966483?pt=UK_CarsParts_Vehicles_CarParts_SM&hash=item53df428e13

As far as I know it effects these kind of switches more then others but you will have to do a google. I dont mean it having the sunroof switch but the slider to the left.

I had to do a bodge job and put a switch I found in the shed in.
Your best bet if you are not a DIYer is to go to a breakers and get a new cluster. Fit it into the Passat, test it, then pay for it.

crosstownk Registered User
#4

Do other items such as the radio switch off when you remove the key from the ignition switch? Leave the radio on, turn the engine off - radio should still be on - withdraw the key and the radio should switch off.

If it doesn't then it may be a problem with the S contact in the ignition switch (D) which will probably mean that you will need a new switch.

Have you had a diagnosis check done on the Convenience ECU?

golfbgud Registered User
#5

bbk said:
By set the lights to come on when you took the key out you mean you used the selector over you head to do this?

If it is this Passat or the facelifted one


then that lighting switch is a very weak design. The actual mechanism can go on them and cause the lights to feck up.

The lights in my Golf (they share the same lighting cluster) never worked for about 9 months after I bought the car and once I started trying to figure it out I found that a bit of metal had become dislodged and was causing shorts etc.

http://cgi.ebay.ie/VW-PASSAT-INTERIOR-ROOF-SUNROOF-LIGHT-SWITCH-UNIT-/360227966483?pt=UK_CarsParts_Vehicles_CarParts_SM&hash=item53df428e13

As far as I know it effects these kind of switches more then others but you will have to do a google. I dont mean it having the sunroof switch but the slider to the left.

I had to do a bodge job and put a switch I found in the shed in.
Your best bet if you are not a DIYer is to go to a breakers and get a new cluster. Fit it into the Passat, test it, then pay for it.


Thanks BBK - Light switch is similar to the one in your Ebay link but my car doesn't have a sunroof. I will have a closer look at the switch contacts etc at the week-end.

golfbgud Registered User
#6

crosstownk said:
Do other items such as the radio switch off when you remove the key from the ignition switch? Leave the radio on, turn the engine off - radio should still be on - withdraw the key and the radio should switch off.

If it doesn't then it may be a problem with the S contact in the ignition switch (D) which will probably mean that you will need a new switch.

Have you had a diagnosis check done on the Convenience ECU?


Thanks crosstownk.

Radio gets killed when I take keys out.
I have not had a diag done on Convenience ECU. I presume this is separate from the main ECU? Car was serviced with TB etc done about 3 months ago - guess this Convenience Module would not show up in regular checks?

bbk Registered User
#7

golfbgud said:
Thanks BBK - Light switch is similar to the one in your Ebay link but my car doesn't have a sunroof. I will have a closer look at the switch contacts etc at the week-end.


It is probably a wide spread problem with the general switch design across that range.

What you are describing is exactly what was wrong with my wagon.
I could switch on the reading lights but the main one never lit.

If you do find there is a problem with the switch nag me over and over (so I dont forget ) and I will upload a picture of my fix if you are a keen enough DIYer.

crosstownk Registered User
#8

golfbgud said:
Thanks crosstownk.

Radio gets killed when I take keys out.
I have not had a diag done on Convenience ECU. I presume this is separate from the main ECU? Car was serviced with TB etc done about 3 months ago - guess this Convenience Module would not show up in regular checks?


Yep - it's a separate ECU but usually most diagnosis checks would interrogate all ECUs unless the mechanic/technician specifically checked certain ECUs. Normally I would run a global test which is what VW would recommend.

Even at that a fault may not be recognised but as you are reporting a fault the tech could perform certain tests to try and isolate the offending component.

Wait and see what bbk's fix is - it may be the most cost effective option provided you can do it yourself.

golfbgud Registered User
#9

bbk said:
It is probably a wide spread problem with the general switch design across that range.

What you are describing is exactly what was wrong with my wagon.
I could switch on the reading lights but the main one never lit.

If you do find there is a problem with the switch nag me over and over (so I dont forget ) and I will upload a picture of my fix if you are a keen enough DIYer.


Took the switch unit off tonight and had a look. Pictures attached. Done a few continuity checks and all appeared OK. Took off switch contacts and cleaned same. Put unit back but no joy. As I don't have another one to compare it against I cannot say if there's a piece of metal broken off/missing?

So, in summary, unless there's a piece of the tracks broken off/missing I would deem the switch unit as operational?

Next steps..........

golfbgud Registered User
#10

The image attached shows the contacts (marked with a red arrow) that come into play when the switch is in the "door" position......

Attachments
2011 Car.JPG
golfbgud Registered User
#11

bbk said:
It is probably a wide spread problem with the general switch design across that range.

What you are describing is exactly what was wrong with my wagon.
I could switch on the reading lights but the main one never lit.

If you do find there is a problem with the switch nag me over and over (so I dont forget ) and I will upload a picture of my fix if you are a keen enough DIYer.


I'm here to "nag" and am handy enough at repairs........thanks.

golfbgud Registered User
#12

Anyone? Thanks.

#13

Have a look at this link
http://nackuk.blogspot.com/2010/06/with-some-of-interior-lights-puddle.html

This is your problem without doubt. Happens to almost every passat and skoda superb mk1 of that vintage.
Expensive fix too.

golfbgud Registered User
#14

Juniorhurler said:
Have a look at this link
http://nackuk.blogspot.com/2010/06/with-some-of-interior-lights-puddle.html

This is your problem without doubt. Happens to almost every passat and skoda superb mk1 of that vintage.
Expensive fix too.


That's a great article - thanks. I haven't looked at the floor as yet (too busy at work). Not looking forward to this either if that's the problem!

bbk Registered User
#15

Here are pics of my fix.

I used a general switch you get with deskside lamps. You should be able to pick one up at Maplin.

I had to make a modification to it. I had to put another contact into the switch. The power goes in one way and then either supplies power straight to the lights and the other to the circuitry that sets the lights on when the door opens. I think.

http://www.maplin.co.uk/ip65-centre-off-rocker-switch-98092

That way centre is off. I is lights on with doors and II is lights on for when you need to read summet.

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