C5 X7 Wiring Diagram

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Paul-R
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Re: C5 X7 Wiring Diagram

Unread post by Paul-R »

How old is the car battery?
As I get older I think a lot about the hereafter - I go into a room and then wonder what I'm here after.

Inside every old person is a young person wondering what the hell happened.

"Trying is the first step towards failure" ~ Homer J Simpson
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PaulC5
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Re: C5 X7 Wiring Diagram

Unread post by PaulC5 »

In a post it says it was replaced with a new one, however, it still needs the voltage checking as something might be draining it causing it to go flat.
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Vule
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Re: C5 X7 Wiring Diagram

Unread post by Vule »

Paul-R wrote: 07 May 2026, 08:37
Vule wrote: 07 May 2026, 08:24Is it possible to upload videos? I have two recordings that I took and can show the situation on the car
Not directly. Post your video on YouTube and then post a link to that video here. Make sure the video is set to be visible to everyone on YouTube.
Here are the links:


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Vule
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Re: C5 X7 Wiring Diagram

Unread post by Vule »

Paul-R wrote: 07 May 2026, 08:38 How old is the car battery?
The one I have on the car is 3 months old
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xantia_v6
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Re: C5 X7 Wiring Diagram

Unread post by xantia_v6 »

When viewing the live diagnostic data do the various relays controlling engine starting appear to be in the correct state? The clicking from the BSM seems to indicate that one of them will be in the wrong state.
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Vule
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Re: C5 X7 Wiring Diagram

Unread post by Vule »

xantia_v6 wrote: 07 May 2026, 14:40 When viewing the live diagnostic data do the various relays controlling engine starting appear to be in the correct state? The clicking from the BSM seems to indicate that one of them will be in the wrong state.
thanks for the advice, I'll send the information to the service center and see what they say
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xantia_v6
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Re: C5 X7 Wiring Diagram

Unread post by xantia_v6 »

My guess (given that the BSM has already been replaced) is that the fault is in the BSI, either a bad solder connection or a faulty relay.
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Vule
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Re: C5 X7 Wiring Diagram

Unread post by Vule »

I got a new ECU last week. The new ECU is starting the connection of the car and now they are working on to get the PIN code. I hope it will be resolved soon
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