19psi

How was it to change out? Did you have to cut the adhesive with something like fishing line and then use a new adhesive strip to attach the new one?

ratbonesxx

I left the "adhesive" part stuck to the glass. I popped off the back and changed the circuit board and back cover while it was still on the glass.

Fpinto

Hi all. Just a quick reply to this post. Changed the light switch for the autolight just yesterday and works great. Coming home coded with durametric like Carrera Cup did ( added 16 to the original code, didn't try to add 4 plus for the interior light because it already light up the interior just pressing the key. Don't need to open the door). Cayenne 955 v6 2006. don't have auto dim rear view mirror. the switch is the porsche one. Adding +1 like durametric suggest enable lights in the MFD but will throw DTC's. adding 16, after a couple of short test all modules everything was good, no cell's

Turboslut

Did this ever work on a 997.1 ?

jhbrennan

Just works on Cayenne (some models) - no one in this thread tried it on 997. Maybe in the 997 forums??

touareg

I am revisiting this after a few years, durametric still can not deal with this module on 957s, and I doubt it ever will after 4 years now.

The module looks like it uses long coding on the 957s vs the older 955s. At least when I scan it with my newer vag-com cable I traded up to last year.

I had a switch I got for 60 bux 3 years ago, I sold it since I could not get it to work, I see they are over 110 now. Anyone willing to lend me one and see if I can figure this out? If so you of course get your switch back either way and adulation from all the 957 owners if I can figure this out.

I was able to write adaptations to the relevant modules, but long coding is new to me and I need to research it a bit. The short coding is what works for the 955s.

I know this can be done, as some said dealer enabled it for them.

This is my module and my coding, with no dimming mirror or auto switch on my 2009.

Address 09: Cent. Elect. Labels: 7Lx-937-049-V2.clb
Part No SW: 7L5 937 049 AA HW: 7L5 937 049 AA
Component: J519 1802
Revision: -2004--- Serial number: --------------
Coding: F2000002082A5C000000000000000000
Shop #: WSC 0000
VCID: 7AFA7B1A3123A292F2-802E

touareg

Ok, I think I got it now this is from ross-tech on the same module in the Touareg T2 and newer I guess, looking at my coding from above, things seem to match up on my Cayenne, but no promises here:

I think I can enable on the 957s now with vag-com!

Byte 4 with Bit 1 and 5

Byte 00 Bit 0 Daytime Running Lights
Byte 00 Bit 1 Country/Area North America
Byte 00 Bit 2
Byte 00 Bit 3 Rear Fog Disabled in Off-Road Mode
Byte 00 Bit 4
Byte 00 Bit 5 Front Fog Lights
Byte 00 Bit 6 Rear Fog Lights
Byte 00 Bit 7 High Beam with Assistance Driving Light
Byte 01
Byte 02 Bit 0 Halogen Headlights (Rest of World)
Byte 02 Bit 1 Halogen Headlights (North America)
Byte 02 Bit 2 Xenon Headlights (Rest of World)
Byte 02 Bit 3 Xenon Headlights (North America)
Byte 02 Bit 4
Byte 02 Bit 5
Byte 02 Bit 6
Byte 02 Bit 7
Byte 03
Byte 04 Bit 0 Assistance Driving Light
Byte 04 Bit 1 Coming-Home
Byte 04 Bit 2 Garage/Cinema Light
Byte 04 Bit 3 Comfort/Tip Blinking
Byte 04 Bit 4 Emergency Brake Blinking
Byte 04 Bit 5 Comfort Interior Lightning
Byte 04 Bit 6
Byte 04 Bit 7
Byte 05 Bit 0
Byte 05 Bit 1 Hydraulic Nozzles for Headlight Washers
Byte 05 Bit 2 Electric Fuel Pump for FSI Engines
Byte 05 Bit 3 Electric Fuel Pump for Gasoline Engines (NOT FSI)
Byte 05 Bit 4 Electric Fuel Pump for Auxiliary Heating
Byte 05 Bit 5 Wake-Up Function (for Air Suspension)
Byte 05 Bit 6 Anti-Theft Protected Headlights
Byte 05 Bit 7
Byte 06 Bit 0 Second Battery Network
Byte 06 Bit 1 Second Battery
Byte 06 Bit 2 Generator Port
Byte 06 Bit 3 Seat Heating
Byte 06 Bit 4 Load Management
Byte 06 Bit 5 Load Consumer
Byte 06 Bit 6 Generator Port Idle
Byte 06 Bit 7
Byte 07
Byte 08
Byte 09
Byte 10
Byte 11
Byte 12
Byte 13
Byte 14
Byte 15

touareg

I was able to enable the required settings on a 2009 957 with vag-com, and appears to work, as I have the delay off setting in the MFI now. Just need to order a switch.

touareg

Success, you need to enable the first bit in the byte code (Byte 04 Bit 0 Assistance Driving Light) along with the Coming home and Comfort options, then everything works with the auto switch on the 957.

Stringbag

Hi. I Just wanted to say thank you for the original posters of this thread.
Replaced my non auto switch (7L5941531B) with an auto switch (7L5941531C)
and the rain sensor (7L0 955 559) with a rain/light sensor (7L0 955 559A) and it all works. No coding required to get the lights to work properly but I don't have a lights option in the comfort menu. UK spec 03 Turbo.
Took about 10 mins.
The light switch is easy.
For those who don't want to search the entire thread, here is a summary.
Switch Instructions here http://www.pelicanparts.com/techarti...eplacement.htm

The mirror is also easy. Remove the clam shell covers carefully - they just pop apart, slide the rear view mirror down and off, and pop out the back of the sensor. Clip the new one on and done.
.

jbb01

Touareg,
I do not have a vag-com...so I assume this still doesn't work on a '08 GTS with durametric coding? My durametric cannot read the electronic coding.

touareg

Correct, you need a hex-can vag-com cable, or a PIWIS.

Go on clubouareg.com, there are folks there that advertise areas they are willing to help someone for free as in beer.

I am in the Boston area if anyone wants help.

Stringbag

Hi Touareg. Quick question if you don't mind. I can't PM you for some reason.
I'm about to get a vag-com cable, so can supply coding info from a U.K. Spec car if that would help anyone. My question is which cable to get? I take it that it just works with no modification to the cable.
So, a new hex v2 or a used hex+can cable? Any difference?
Thanks very much

dgreen78

Just took my car into Bellevue,wa Porsche dealership and was told it is not possible to install this switch in my 08 Cayenne. After I told them it is possible they rolled there eyes and said "oh you must have read it on the internet" 🙄

If anyone knows of someone in the Seattle area please pm me.

dalewydra

Hi Toureg,
I don't think I can send PM's yet so will drop the question here.

I have a '08 Cayenne S without the auto headlight feature. I have purchased a new light switch with the auto selector but being a 957 it doesn't want to work.
I have read though a heap of posts and you seem to be the man who is getting this to work.

In a post you say the module needs to be coded with a hex-can vag-com cable which I have purchased off fleabay and am waiting for it to be delivered. My question is what software did you use?
Did you use the free VCDS-Lite software and was it able to make the changes to the module or did you have to purchase a different version?

Thanks,
Dale - Perth Australia