2009 C5 Tourer no gears and no start

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Jez15
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Joined: 18 Jan 2021, 21:07

2009 C5 Tourer no gears and no start

Post by Jez15 »

Hi there, anyone have any ideas what the problem is with my Dads C5 Tourer.
Battery went flat, replacement main battery and key battery.
Lots of strange issues such as non start, lights not working etc etc

Reset BSI via diagnostics and manually , lights and boot now working but no start. On the instrument panel there is nothing showing that its in Park or in Neutral. Comes up with brake problem which I thought was brake peddle switch , changed and no difference. Epb works absolutely fine. On diagnostics I cannot see the gearbox properly although it was working 100% before the flat battery.

Any ideas ????
Last edited by Jez15 on 21 Jan 2021, 09:56, edited 1 time in total.

rrijken
Donor 2020
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Joined: 29 Mar 2020, 04:39
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Re: 2009 C5 Tourer no gears!??

Post by rrijken »

Is new battery the correct amps?

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GiveMeABreak
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Re: 2009 C5 Tourer no gears!??

Post by GiveMeABreak »

Make sure you follow this properly including the timings or you'll likely end up with electrical glitches:

BSI Reset / Battery Disconnect / Reconnect Procedure

Jez15
Posts: 3
Joined: 18 Jan 2021, 21:07

Re: 2009 C5 Tourer no gears!??

Post by Jez15 »

rrijken wrote:
20 Jan 2021, 03:12
Is new battery the correct amps?
Yes definitely

Jez15
Posts: 3
Joined: 18 Jan 2021, 21:07

Re: 2009 C5 Tourer no gears!??

Post by Jez15 »

GiveMeABreak wrote:
20 Jan 2021, 16:26
Make sure you follow this properly including the timings or you'll likely end up with electrical glitches:

BSI Reset / Battery Disconnect / Reconnect Procedure
Yes this was the same procedure that i followed

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GiveMeABreak
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Re: 2009 C5 Tourer no gears and no start

Post by GiveMeABreak »

Ok so your best bet is to get the vehicle read with Diagbox. This is the dealer level diagnostic software used and will talk to all the ECUs in the car, which a lot of aftermarket units won’t.

There will probably be specific codes showing up and that will provide pointers. Replacing parts otherwise at random is not going to help. The systems are very heavily integrated and a fault in one system can have a knock on effect on another.

There are over a hundred fault codes just for the gearbox alone so it’s important to see what is going on.

If you can get it read, pop up the fault codes here.

If you don't have access to Diagbox, see this link for a list of members who do. There is a link atr the bottom of the list to Google Maps that shows you the broad location of each member. Just send one of them a Private Message:

List of Diagbox Owners