Good evening.
My 2009 C5 X7 will not release the electric parking brake, bleeping and displaying various messages, 'anti roll back faulty' , 'Handbrake faulty', 'hand brake not applied' etc.
I have diagbox but get the message 'no communication with the ecu' under secondary parking brake.
Does anyone have suggestions as to what to try next?
Thanks in advance
Tony
No communication with EPB ecu
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GiveMeABreak
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Re: No communication with EPB ecu
Ok so what version of Diagbox are you running and have you first undertaken the Global Test?
Please Don't PM Me For Technical Help
Marc
Marc
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TonyC
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Re: No communication with EPB ecu
Hello Marc,
My Diagbox is version v07.83 but I'm pretty naive about how to use it.
The global test had 2 items in red, headlight self adjusters (not sure if this is relevent as the car has hydractive suspension) and secondary parking brake
showing no comm with ecu.
I tried various routes in to read codes but nothing. The battery is good but as a precaution i had it on charge.
Cheers
Tony
My Diagbox is version v07.83 but I'm pretty naive about how to use it.
The global test had 2 items in red, headlight self adjusters (not sure if this is relevent as the car has hydractive suspension) and secondary parking brake
showing no comm with ecu.
I tried various routes in to read codes but nothing. The battery is good but as a precaution i had it on charge.
Cheers
Tony
-
TonyC
- Posts: 3
- Joined: 24 Jan 2020, 21:55
- Location: Northants
- My Cars: C5 X7 Exclusive estate
DS19 Pallas - long gone but sadly missed
XM
GS
Ami 8
C5 mk 1 (Not missed)
Re: No communication with EPB ecu
Success....
Traced the problem to a dodgy earth connection.
Thanks for your input.
Till the next time.
Cheers
Tony
Traced the problem to a dodgy earth connection.
Thanks for your input.
Till the next time.
Cheers
Tony
-
GiveMeABreak
- Forum Admin Team
- Posts: 37323
- Joined: 15 Sep 2015, 19:38
- Location: West Wales
- My Cars: C3 Aircross SUV HDi Flair Peperoncino Red (The Chili Hornet)
C5 X7 2.0 HDi Exclusive Mativoire Beige (The Golden Hornet)
C3 1.6 HDi Exclusive Aluminium Grey (The Silver Hornet)
C5 MK II 2.0 HDi Exclusive Obsidian Black
C5 MK I 2.0 HDi SX Wicked Red
Xantia S2 2.0 HDi SX Hermes Red
C15 Romahome White
XM 2.0 Turbo Prestige Emerald Green Pearlescent
XM 2.0 Turbo Prestige Polar White
XM 2.0 SX Polar White
CX 20 Polar White
GS 1220 Geranium Red
CX 2.4 Prestige C-Matic Nevada Beige
GS 1000 Cedreat Yellow - x 5720
Re: No communication with EPB ecu
Glad that's sorted! Nicely done.
Please Don't PM Me For Technical Help
Marc
Marc