Citroen c5 X7 Xenon headlight retrofit on steel sunspension

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Dzony97
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Re: Citroen c5 X7 Xenon headlight retrofit on steel sunspension

Unread post by Dzony97 »

Okay,so the diagram is definitely wrong because when i move the sensors up and down i dont get anything changed in front or rear sensor height but i change speed of the vehicle in diagbox parameter measurement, now good question is how the hell do i get the right diagram part number is 96 731 954 80 01 prod. date 21/01/13
Dzony97
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Re: Citroen c5 X7 Xenon headlight retrofit on steel sunspension

Unread post by Dzony97 »

Okay, so I guess I will somehow now need a diagram specified for this headlights ECU.
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Dzony97
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Re: Citroen c5 X7 Xenon headlight retrofit on steel sunspension

Unread post by Dzony97 »

Little update,

C2 wire changes vehicle speed.
C3 wire changes steering wheel angle.
When changing the angle of the potentiometer (height sensor),
so basically, to me it looks like the car is not picking up those parameters from CAN as it should, but instead from wires, which again makes no sense.
So I'm kinda stuck right now.
At least now it is confirmed that diagrams that I've got from Citroen wiring diagrams are for sure not accurate and the right ones.
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Kees
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Re: Citroen c5 X7 Xenon headlight retrofit on steel sunspension

Unread post by Kees »

When I search on this partnumber it's seems that it comes from a C5 2.0 hydraulic car.
I find this (see pic) on the forum here is 6600 the cpu, and 77... is the BHI on top of the pomp.
But this means, the info for the cpu comes from the can bus, because the data from the height sensors is processed by the BHI.
20250704_120627.jpg
Kees
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Re: Citroen c5 X7 Xenon headlight retrofit on steel sunspension

Unread post by Kees »

So, maybe you have to look if these cpu is also used in a peugeot with xenon headlamps and automatic level adjustment.
Dzony97
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Re: Citroen c5 X7 Xenon headlight retrofit on steel sunspension

Unread post by Dzony97 »

Kees wrote: 05 Jul 2025, 09:25 When I search on this partnumber it's seems that it comes from a C5 2.0 hydraulic car.
I find this (see pic) on the forum here is 6600 the cpu, and 77... is the BHI on top of the pomp.
But this means, the info for the cpu comes from the can bus, because the data from the height sensors is processed by the BHI.
Image
Yup, I guess that Xenon and non-hydro suspension is like a needle in a haystack, even though it was factory made (because there is a diagram in the same program u took a picture of)
Life would be easier if I could find a part number for a non-hydro suspension ECU. But I guess that is also impossible. Hmm, I'm wondering if does 508 Peugeot uses the same one? Since he also has beam correction and directional lights.
Dzony97
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Re: Citroen c5 X7 Xenon headlight retrofit on steel sunspension

Unread post by Dzony97 »

Based on the distinct design, integrating a Peugeot 508 leveling unit appears infeasible. Furthermore, the system does not utilize CAN bus communication. The provided diagram illustrates the Peugeot headlight correction ECU. Therefore, the remaining viable option is to explore alternative headlight modules from a local Citroen salvage yard, assessing their potential for reconfiguration and compatibility with height sensor readings.
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Dzony97
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Re: Citroen c5 X7 Xenon headlight retrofit on steel sunspension

Unread post by Dzony97 »

Can someone extract a part number from a VIN? I might have found a car that has Xenons and it's not hydroactive.
Kees
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Re: Citroen c5 X7 Xenon headlight retrofit on steel sunspension

Unread post by Kees »

Maybe I can help, because I have Citroën service box on my pc.but you have the vin pb to me, otherwise I can't read it
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myglaren
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Re: Citroen c5 X7 Xenon headlight retrofit on steel sunspension

Unread post by myglaren »

Kees wrote: 05 Jul 2025, 19:36 Maybe I can help, because I have Citroën service box on my pc.but you have the vin pb to me, otherwise I can't read it
Could be a problem with that. VINs in PMs are unreadable. Better to use email.
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Paul-R
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Re: Citroen c5 X7 Xenon headlight retrofit on steel sunspension

Unread post by Paul-R »

Or break up the beginning of the VIN with spaces.
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Dzony97
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Re: Citroen c5 X7 Xenon headlight retrofit on steel sunspension

Unread post by Dzony97 »

Till I get a VIN from the car that is equipped with xenons, I did some research and found one on eBay, could you please check this part number:
96 815 755 80 00
VIN for that car is: VF 7RW9HZ C5 4035848
According to the pictures, it is a 1.6 HDI with no Hydro suspension.
So I guess that is the part number I'm looking for now.
Here is the link I found the part from: https://finndel.no/delinfo.aspx?f=708&d ... zY3MDcxNjE.
Kees
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Re: Citroen c5 X7 Xenon headlight retrofit on steel sunspension

Unread post by Kees »

The part no# is also in the picture, it's 6224P5,
I also find a part no 6224P4, it seems, this is one is also used by peugeot.
But what I understand is the RP part number 6224T4
This pic below is from the service box #1,are the CPU part numbers.
20250706_104603.jpg
Kees
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Re: Citroen c5 X7 Xenon headlight retrofit on steel sunspension

Unread post by Kees »

I read your post again from the beginning, now I think that the solution is in a other direction.
Sinds you already have many connections make between the cpu and headlamp units, and also have some readings from the height sensors, even they gif fault reading.
Now is should see wich pins are not used and then connect the signal pin #2 from the height sensor to see if you see different data on the diagbox. You know where this connection is now on the cpu are wrong.
The best way, to check before, the unused pins on the cpu are not grounded or gif a raiding of 5 volt.
Dzony97
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Re: Citroen c5 X7 Xenon headlight retrofit on steel sunspension

Unread post by Dzony97 »

I am pleased to report that the issue has been resolved.

Here is the final update regarding the work.

Initially, I considered utilizing the available slots on the connector. Despite the fact that adjusting the height sensors altered the vehicle speed and steering angle, the diagram was accurate. However, the diagnostic tool was not displaying the actual values for some reason.

The car was brought in for servicing, allowing me to examine the sensor configuration when the vehicle was on level ground. I then adjusted the rear sensor to a nearly identical position and attempted to clear the fault, which was successfully accomplished. Subsequently, I measured the signal wire from the rear sensor, which indicated a reading of 2.6 V. Following this, I measured and set the front sensor to 2.6V and attempted to clear the fault codes; the faults related to the signal wires were resolved. I then proceeded to learn the vehicle height, and the procedure was completed successfully. Therefore, the only remaining step is to position the car on level ground and adjust the sensors to achieve a signal output of 2.6 V. Everything is functioning as intended, just as if the car had been equipped with Xenon headlights from the factory.

As an additional note, the number on the headlights correction module is unrelated to the issue I encountered; it functions correctly on both the V module I had and the one labeled Q, which I subsequently purchased.
I would be very pleased to answer any questions from those who are considering retrofitting their vehicles.

I am very grateful to everyone who has taken the time to assist me with the retrofit.

My next reteofit is the sunroof and a Phillips hi-fi sound system next, so keep an eye out. :)