headlamp communication error

This is the Forum for all your Citroen Technical Questions, Problems or Advice.

Moderator: RichardW

User avatar
Bandit12
Donor 2020
Posts: 384
Joined: 23 Apr 2013, 11:35
x 9

headlamp communication error

Post by Bandit12 »

I've got a persistent fault with my C5, diagbox global assessment lists "Headlamp/directional headlamps communication error" in red I tried clicking on fault to open it up and gain more information but nothing happens
Any ideas? Should I be checking wiring etc?

Gino

User avatar
GiveMeABreak
Forum Admin Team
Posts: 21199
Joined: 15 Sep 2015, 19:38
x 2112

Re: headlamp communication error

Post by GiveMeABreak »

I already answered it on your last Diagbox post Gino. :) That is only for models with directional Xenon headlights - which you don't have, so ignore it. It's possible that in the past at some point the BSI may have been mis-configured with this option and therefore the BSI can't talk to the ECU as it's not there.
  • Check in the BSI for the option that says 'Type of Bend Lighting'. This should be set to 'Static Lighting controlled by the BSI'.
  • The other option is 'Directional Headlamps' - make sure this is set to 'Absent'

User avatar
Bandit12
Donor 2020
Posts: 384
Joined: 23 Apr 2013, 11:35
x 9

Re: headlamp communication error

Post by Bandit12 »

:oops: oops sorry Marc, didnt notice your post on the diagbox topic. I got a bit confused cos my car does have directional headlights and headlights were also pointing low. No idea if they have self corrected since broken ECU wire was repaired as not driven car at night since lock down began. I'll point car at the garage tonight and have a look :)

Thanks again

Gino

User avatar
GiveMeABreak
Forum Admin Team
Posts: 21199
Joined: 15 Sep 2015, 19:38
x 2112

Re: headlamp communication error

Post by GiveMeABreak »

Have you changed your car? The one I have is with VIN ending in 848?

If this is the same car as the one I have for you, you have halogen headlamps, not directional Xenons - hence the confusion on my part...

This is not to be confused with the headlamp vertical levelling motors on Halogen headlamps, which are not the same as the active directional lighting system.