Light Assist Retrofit

[suboilbib]

Hi,

Could anyone tell me how you remove the existing light switch in the Octavia? I purchased a light assist unit (very cheaply) off ebay to try it out but cannot work out how to remove the old one? Any help would be gretly appreciated!

[RobbySpurs]

Would be surprised if you can do this. You will need the sensors in the rear view mirror, the replacement switch and a reprogramme.

I got my vRS with the auto dipping mirror, rain sensors and light assistant, but for some reason when it came the light assistant was missing. Dealer ordered and replaced switch and then had a 'mare reprogramming. Think it works now, but it isn't as straight forward as just swapping the switch over.

PS...sorry, don't no how to get the switch off, but am sure someone here will tell you.

[TallioN]

[suboilbib]

Thank you very much. I have the sensor in the rear view mirror and will try to get the coding done but this was the main sticking point. Thank you very much indeed!

[Ray.Ward]

Well he popped over to see his local friendly VAG-COM geeza, and we checked the coding.

Funily enough all the coded looked to be place.

However, running a scan against Controller 09 we get the following issue

Address 09: Cent. Elect. Labels: 1K0-937-049.LBL

Part No SW: 1K0 937 049 T HW: 1K0 937 049 T*

Component: Bordnetz-SG 1.0 H29 0704

Coding: E18E0F120004140000110D000000000000

Shop #: WSC 73430

Part No: 1Z2 955 119 A

Component: Wischer SK351 012 0401

Coding: 00065525

Shop #: WSC 73430

Part No: 1K0 955 559 M

Component: RegenLichtSens 005 0605

Coding: 00217125

Shop #: WSC 73430

1 Fault Found:

01800 - Light Switch (E1)

008 - Implausible Signal - Intermittent

The problem is the lights are on in daylight when put on the tunnel setting?

Which happens in either his or my car - any ideas ?

[suboilbib]

Did more fiddling yesterday night but still couldn't find the source of the problem. Anyone got any ideas?

[Tech1e]

Sounds like the control unit is coded for daylight running.

Quite a few new cars were by mistake at the factory.

[VRStu]

Have you changed that coding at all Ray?

[Ray.Ward]

Yes we checked the daylight running and it seems to be right against all the other suggestions....

Do you think we might have a relay missing or some other coding that not "long coding"

Like the seatbelt warning one ?

Checking the sticky post in VAG-COM forum section

For auto lights

DISCLAIMER: you need rain sensor wipers and test with someone elses tunnel light switch before you buy one as it may not work properly

09 – Central electrics

Long coding (07) , click yes when asked

Byte 1 – highlight ‘assistance driving light_leaving home active’and ‘coming home active.’

Transfer coding.

These are already ticked, and neither American or Scandanavia are ticked so it make no sense ?

[VRStu]

I ran the code through Lcode last night and I wasn't sure if it looked the same as mine and hence why I asked if you'd changed anything yet.

I'm pretty sure Jeff (roo) has been playing around with this idea before.

[VRStu]

I'll be plugging mine in later to look at something else so I'll see what mine is set at as I have light assist.

[Ray.Ward]

Excellent, thanks Stu.

Suboilbib has my cable otherwise I would suggest a "Remote assistance" session.

If we can sort his car out then I'll be on the lookout for a switch also

[VRStu]

Like I said I really don't think it's that simple. Pretty sure Jeff was trying it with another car and using his own switch.

[VRStu]

Ray I had a quick look at my coding yesterday and it seemd to match that of which you have above.

[RobbySpurs]

I had mine put on at the dealer (paid for option that didn't arrive so retrofitted) and I seem to have the same problem, that the headlights are always on when switch at tunnel setting. Will be going to see the dealer about it.

[Ray.Ward]

Robby,

Can you let us know how you get on - if they resolve it, I'll try and source one and drop the car to the dealers

Cheers

[RobbySpurs]

Will do

[Ray.Ward]

I have light assist "tunnel" icon on my light switch.

Like many others - when set to "tunnel" the side/headlights are always on.

I know that its not dark enough for the lights to be on because the mirror puddle lights are not illuminated on 'unlock'.

Anyone heard from Skoda Technical for a fix?

[VRStu]

Have you tried changing any of the coding Ray?

[Ray.Ward]

No, was about to go outside and plug in VAG-COM

hard to tell if its working now though as its starting to get dark

I know Coming/Leaving is enabled as it works as expected and shows up as an option in MaxiDot

[Ray.Ward]

Just done an autoscan in VAG-COM 704.1 and shows the following errors

09-Cent. Elect. -- Status: Malfunction 0010

Address 09: Cent. Elect. Labels: 3C0-937-049.LBL

Part No SW: 3C0 937 049 E HW: 3C0 937 049 E

Component: Bordnetz-SG H37 1002

Coding: E18A0F031004140000110D000000000000287F075C

Shop #: WSC 73430

Part No: 1Z2 955 119 A

Component: Wischer SK351 012 0401

Coding: 00065525

Shop #: WSC 73430

Part No: 1K0 955 559 T

Component: RegenLichtSens 011 1110

Coding: 00208933

Shop #: WSC 73430

1 Fault Found:

01800 - Light Switch (E1)

008 - Implausible Signal - Intermittent

Freeze Frame:

Fault Status: 00101000

Fault Priority: 3

Fault Frequency: 7

Reset counter: 180

Mileage: 13710 km

Time Indication: 0

Freeze Frame:

OFF

Voltage: 12.30 V

OFF

ON

OFF

OFF

OFF

Attached are the two screens from the long coding

[Tech1e]

That fault is there because the switch has been disconnected at some point. I would think if the lights are on all the time the car is coded for daytime lighting, get quite a few coded like that for some reason.

[Ray.Ward]

If i change Byte 2 Bit 4 to a tick setting Coming-Home to /Potentiometer/ then i get a different fault code

1 Fault Found:

02390 - Control / Regulation for Ambience Lighting (E400)

009 - Open or Short to Ground

GRRR

[Ray.Ward]

Lummox, Daytime running lights are not selected ?

If i put the switch to the '0' and tick Daytime lights in VAG-COM they do come on.... and looking at the LC pics above they are not ticked.... must be something else?

[VRStu]

That isn't enabled on mine Ray and I have lights assist.