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wylan
Member Since: 07 Mar 2010
Location: uk
Posts: 22
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| Adaptive xenons/ cornering lights not working |
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After 65000 absolutely faultless miles my 2012 D4 has decided to play up.
The adaptive xenons do a very very small wiggle on start up, but that's it. No movement at all when the car is turning.
Both cornering lights are also failing to work at all.
Is there a quick fix/fuse anywhere that I can check or its it a trip to the dealers?
Many thanks
Mike
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 6th Nov 2014 6:57 pm |
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toudy
Member Since: 26 Jun 2009
Location: Bratislava
Posts: 18
  
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I think, that one of headlamp is broken. Inside of AFS head lamp are two motors (swivel motor-left to right and horizontal-leveling motor) and one ECU. The ECU control the stepper swivel motor. See my failure http://www.disco3.co.uk/forum/topic107584.html and http://www.disco3.co.uk/forum/topic109576.html. In my case was left headlamp unit. The failure-orange indicator resets after two times of IGN on/off and KEY in/out. hidden winch T-MAX 12000lbs, under body protection, deactivated ECO Start/Stop by Arduino Nano, LAZER 750 Triple R LED high beam lights, CB radio
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| 23rd Nov 2014 9:42 pm |
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toudy
Member Since: 26 Jun 2009
Location: Bratislava
Posts: 18
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| Re: Adaptive xenons/ cornering lights not working |
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wylan wrote:After 65000 absolutely faultless miles my 2012 D4 has decided to play up.
The adaptive xenons do a very very small wiggle on start up, but that's it. No movement at all when the car is turning.
Both cornering lights are also failing to work at all.
Is there a quick fix/fuse anywhere that I can check or its it a trip to the dealers?
Many thanks
Mike
New info. The failure was COMMUNICATION MALFUNCTION OF LEFT ACTUATOR /LOST COMMUNICATION WITH LEFT HEADLAMP MODULE -:U1A38-BUS SIGNAL/MESSAGE FAILURE - MISSING A MESSAGE. (PERMANENT) and COMMUNICATION MALFUNCTION OF RIGHT ACTUATOR /LOST COMMUNICATION WITH RIGHT HEADLAMP MODULE -:U1A39-BUS SIGNAL/MESSAGE FAILURE - MISSING A MESSAGE. (HISTORIC).
Solution: all connectors are good, the cable harness are good, the AFS ECU (NNW502652) is good, but one of the front head lamp not. For test, you can change their, form L to R and R to L side. If the failure occured with the lamp, the lamp is not good.
In my case, the internal 'swivel ECU KOITO DENSO 10188-16569' http://www.toudy.sk/images/lrd3/headlampunit/20140307_231936.jpg (inside of Xenon AFS lamp) was not good. You can check if is swivel actuator KOITO DENSO HLSA-33001 (inside of Xenon AFS lamp) good, ttp://www.toudy.sk/images/lrd3/headlampuni...33001).pdf
Inside of swivel ECU is PCB http://www.toudy.sk/images/lrd3/headlampunit/circuitassy.jpg with communication chip L9637D (Monolithic bus driver with ISO 9141, K-Line, L-Line interface, http://www.st.com/web/en/resource/technica...0234.pdf). In my case the L9637D is not good. This chip provide comm. between AFS ECU a Xenon AFS head lamp. You can measure signals... http://www.toudy.sk/images/lrd3/afs_xenon_l9637d_eng.pdf
After replacement BUS chip L9637D the head lamp works good. The failure-orange indicator resets after two times of IGN on/off and KEY in/out. hidden winch T-MAX 12000lbs, under body protection, deactivated ECO Start/Stop by Arduino Nano, LAZER 750 Triple R LED high beam lights, CB radio
Last edited by toudy on 7th Apr 2015 5:11 pm. Edited 2 times in total
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| 7th Apr 2015 12:24 pm |
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toudy
Member Since: 26 Jun 2009
Location: Bratislava
Posts: 18
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toudy wrote:I think, that one of headlamp is broken. Inside of AFS head lamp are two motors (swivel motor-left to right and horizontal-leveling motor) and one ECU. The ECU control the stepper swivel motor. See my failure http://www.disco3.co.uk/forum/topic107584.html and http://www.disco3.co.uk/forum/topic109576.html. In my case was left headlamp unit. The failure-orange indicator resets after two times of IGN on/off and KEY in/out.
New info. The failure was COMMUNICATION MALFUNCTION OF LEFT ACTUATOR /LOST COMMUNICATION WITH LEFT HEADLAMP MODULE -:U1A38-BUS SIGNAL/MESSAGE FAILURE - MISSING A MESSAGE. (PERMANENT) and COMMUNICATION MALFUNCTION OF RIGHT ACTUATOR /LOST COMMUNICATION WITH RIGHT HEADLAMP MODULE -:U1A39-BUS SIGNAL/MESSAGE FAILURE - MISSING A MESSAGE. (HISTORIC).
Solution: all connectors are good, the cable harness are good, the AFS ECU (NNW502652) is good, but one of the front head lamp not. For test, you can change their, form L to R and R to L side. If the failure occured with the lamp, the lamp is not good.
In my case, the internal 'swivel ECU KOITO DENSO 10188-16569' http://www.toudy.sk/images/lrd3/headlampunit/20140307_231936.jpg (inside of Xenon AFS lamp) was not good. You can check if is swivel actuator KOITO DENSO HLSA-33001 (inside of Xenon AFS lamp) good, ttp://www.toudy.sk/images/lrd3/headlampuni...33001).pdf
Inside of swivel ECU is PCB http://www.toudy.sk/images/lrd3/headlampunit/circuitassy.jpg with communication chip L9637D (Monolithic bus driver with ISO 9141, K-Line, L-Line interface, http://www.st.com/web/en/resource/technica...0234.pdf). In my case the L9637D is not good. This chip provide comm. between AFS ECU a Xenon AFS head lamp. You can measure signals... http://www.toudy.sk/images/lrd3/afs_xenon_l9637d_eng.pdf
After replacement BUS chip L9637D the head lamp works good. The failure-orange indicator resets after two times of IGN on/off and KEY in/out. hidden winch T-MAX 12000lbs, under body protection, deactivated ECO Start/Stop by Arduino Nano, LAZER 750 Triple R LED high beam lights, CB radio
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| 7th Apr 2015 12:24 pm |
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