c5 suspension wont rise...please read

[Hell Razor5543]

Deleted

[GiveMeABreak]

I think we have determined already that the pump is working James - as he's already stated that (viewtopic.php?p=763997#p763997).

@ Sergiu: If you changed the height sensors then it is essential that they went back on in exactly the same place and angle. These are placed in position at factory and the positions should be marked before removal so the new ones can be replaced in exactly the same position.

If not, then the suspension will be well out.

[Sergiu]

@GiveMeABreak In your previous message you say if you press the sport button It's not gonna go up or down, but If I press it the car will go down on stop buffers. And tells me the sport mode activated or deactivated ( depends ) but up and down button doesn't show on dashboard. I lift the car with Diagbox from a friend by giving test to rear hydractive valve few times, the pump starts and the car lifts, and the same to front axlle

[GiveMeABreak]

I can't advise on this as it's the first time I've ever heard of this behaviour regarding the sport button.

The sport button will initially keep the vehicle in sport mode longer. Sport mode cuts out the centre spheres (front and rear), so that the vehicle rides on the outer four corner spheres only. It has no effect on the raising and lowering of the suspension. The only thing that comes to mind is the control of the stiffness regulators that perform the switching in and out of the centre spheres. They also control the flow back of the hydraulic fluid to the BHI. A failing hydraulic block can cause the vehicle to sink at the rear or the front, but unusual for it to sing at both the front and rear together.

So I suspect something else is going on - but I have to urge caution here, please don't get under the vehicle unless it is independently supported by other means as when there are problems with the suspension it can drop unexpectedly and crush you.

It will need further diagnostics to determine the problem. Run a Global Test and report back any fault codes with your VIN. Please post your VIN in full without spaces - it will be automatically masked from public view after submitting your post & will only be visible to staff.

[vallium]

Russians are saying u2005 could be rusty rear height corrector lever. Use auto-translate so it's understandable

https://www.drive2.ru/search?text=u2005

[GiveMeABreak]

No, U2005 as far as suspension goes is a well known ghost fault (U2005: Triggering (vehicle speed receipt anomaly): Not characterised, and is triggered as a result as I said of interrogating the suspension ECU.

[Sergiu]

U1116 Suspension ECU data not valid fault
This is the fault that I get when I give another test, and also telling me that
Body height ECU - no dialogue
Variable damping ECU - no dialogue
Dynamic headlamp height adjuster - no dialogue. Can you tell me what should I change first? where to start? Thank's

[Sergiu]

how to post pictures? I could post the pictures here so you can see what I am talking about

[Hell Razor5543]

Next time you post click on the 'Full Editor & Preview' button first. Then click on the 'Attachments' tab below. Then click on the 'Add file' button, and select the photos you want to post up.

[myglaren]

Next time you post click on the 'Full Editor & Preview' button first. Then click on the 'Attachments' tab below. Then click on the 'Add file' button, and select the photos you want to post up.

Then place your cursor where you want the picture to appear in your text and click the "Place Inline" button.

[Sergiu]

?

[GiveMeABreak]

You still haven't provided the VIN as requested in my last post.

[Sergiu]

VF7**************[VIN obfuscated, can be read by forum staff]

[GiveMeABreak]

There is no further data available on the fault because with these data errors, it simply cannot communicate with the BHI. The protocol controller is part of the CAN system and the suspension ECU uses the CAN network to communicate with other systems. If the CAN controller in the BHI is not working, then this is why you will get issues.

So you've either got an issue with the electrical connections or the ECU in the BHI.

Fault for the Integrated BHI:
U1116 Suspension ECU data not valid fault : Protocol controller not functional

Fault for the Directional Headlamps:
U1116 Fault: Suspension System ECU missing : Absence of communication
U1117 Dialogue with the suspension ECU : Absence of communication

[Sergiu]

Sorry, can you please provide picture of the suspension ECU, BHI and what is the CAN controler? thanks