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Auto Light malfunction G05
17-02-2023, 17:58 PM,
Post: #1
Auto Light malfunction G05
Hi,

I think it is better to make a new thread as to discuss in "Different Light/Rain Sensor".

Have a malfunction in auto light system.
Rain/Light sensor seems to work good. 

If I start car, light goes on if it is dark or daylight is on if it brighter.

If it is dark and then will brighter, the headlights goes off for one second and goes on again - inside the light signs goes off! 

I think lights sensor work, tell BDC it is bright enought, BDC switch off light, so lightsigns inside and headlight goes off and then a signal comes and switch light on again but light signs inside won't on. Inside you think light is off, outside it burns. there is no fault in ista.


Sensor Number Hella 6PW-011-807-921 is built in.

What could make this malfunction?
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17-02-2023, 18:04 PM,
Post: #2
RE: Auto Light malfunction G05
You need to do a diagnostic with ista and see what errors present etc.


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18-02-2023, 09:04 AM,
Post: #3
RE: Auto Light malfunction G05
(17-02-2023, 18:04 PM)mbm1703 Wrote:  You need to do a diagnostic with ista and see what errors present etc.

Thx, but the are no fault in ista, and if I check light sensor I can see that it works. What could I check more in ista about auto light?
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19-02-2023, 03:33 AM,
Post: #4
RE: Auto Light malfunction G05
(17-02-2023, 17:58 PM)6ergsm Wrote:  If it is dark and then will brighter, the headlights goes off for one second and goes on again - inside the light signs goes off! 

We are talking about the low beam light, yes? These turn off for a second and then back on? How do you confirm it, as it should be pretty bright outside when the lights switch over so that you usually cant see the beams on the ground anymore.

I recall seeing fair amount of issues with the light switch modules at some point, but can't recall if G05 was also affected. Do light modes other than automatic work correctly?
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19-02-2023, 18:27 PM,
Post: #5
RE: Auto Light malfunction G05
(19-02-2023, 03:33 AM)Raimo5 Wrote:  
(17-02-2023, 17:58 PM)6ergsm Wrote:  If it is dark and then will brighter, the headlights goes off for one second and goes on again - inside the light signs goes off! 

We are talking about the low beam light, yes? These turn off for a second and then back on? How do you confirm it, as it should be pretty bright outside when the lights switch over so that you usually cant see the beams on the ground anymore.

I recall seeing fair amount of issues with the light switch modules at some point, but can't recall if G05 was also affected. Do light modes other than automatic work correctly?

Yes low beam light!

I've tested it in many situations, e.g. if I drive into a tunnel and out again or under a bridge or out of the garage, always the same, the light goes off for a very short time and immediately comes on again, but in the KOMBI the symbols go out and no on again!


You think light switch modules could be the problem - all other functions works without problem...
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19-02-2023, 18:46 PM,
Post: #6
RE: Auto Light malfunction G05
What is the I-level of the car? If you provide me cars vin seven last digits I can check I-level stand for you. Could be software related.
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19-02-2023, 22:23 PM,
Post: #7
RE: Auto Light malfunction G05
Light switch must be replaced... Known problem.


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23-02-2023, 12:08 PM,
Post: #8
RE: Auto Light malfunction G05
(19-02-2023, 22:23 PM)vanos Wrote:  Light switch must be replaced... Known problem.

Replaced light switch but nothing changed
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24-02-2023, 19:17 PM,
Post: #9
RE: Auto Light malfunction G05
(19-02-2023, 18:46 PM)unicoil Wrote:  What is the I-level of the car? If you provide me cars vin seven last digits I can check I-level stand for you. Could be software related.

S18A-21-11-561


Light switch change solves not the problem!
Any other ideas?
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