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Non starter after handbrake module replacement
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jonjo6782
 


Member Since: 08 Nov 2022
Location: ireland
Posts: 4

Ireland 2007 Discovery 3 TDV6 S Manual Unknown ColourDiscovery 3
Non starter after handbrake module replacement

Got the handbrake module replaced in my discovery 3 recently, once fitted the vehicle won't start, it is flickering the immobiliser light, an e displayed in the gear indicator (manual) and the hazard lights are flashing. The vehicle has lost communication with the ecu and handbrake module. I have tried plugging the old one back in still no joy. Any ideas???
  
Post #231541217th Nov 2022 10:45 pm
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Flatlander
 


Member Since: 20 Jul 2015
Location: Here
Posts: 575

United Kingdom 

Are the fuses OK? is the bale arm connector latched in properly? all the symptoms you describe are loss of CAN communication to and through the park brake module.
  
Post #231541317th Nov 2022 10:55 pm
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jonjo6782
 


Member Since: 08 Nov 2022
Location: ireland
Posts: 4

Ireland 2007 Discovery 3 TDV6 S Manual Unknown ColourDiscovery 3

All fuses checked and are OK, would the new module cause a short circuit and blow the ecu?
  
Post #231544518th Nov 2022 10:47 am
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Flatlander
 


Member Since: 20 Jul 2015
Location: Here
Posts: 575

United Kingdom 

I've never known it, if there was a short circuit, then a fuse would have blown, if the data lines were somehow shorted, the other connected modules would shut down and recover when the old module was reconnected - you haven't left anything unplugged around the centre console when removing and fitting the release cable have you?
  
Post #231544618th Nov 2022 11:00 am
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jonjo6782
 


Member Since: 08 Nov 2022
Location: ireland
Posts: 4

Ireland 2007 Discovery 3 TDV6 S Manual Unknown ColourDiscovery 3

Turns out I plugged the old handbrake module back in and the vehicle started, new one must be a faulty
  
Post #231549918th Nov 2022 6:09 pm
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Flatlander
 


Member Since: 20 Jul 2015
Location: Here
Posts: 575

United Kingdom 

Or it could be a D4 module, they operate at different CAN speeds....
The CAN identifier size is different, not the speed.
  
Post #231550318th Nov 2022 6:19 pm
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Flack
 


Member Since: 06 Sep 2006
Location: Preston Lancashire
Posts: 6232

England 2007 Discovery 3 TDV6 XS Auto Stornoway GreyDiscovery 3

Have you tried to re-sync the ecu's the epb module is one that is checked for ID before starting.

Flack Thumbs Up
  
Post #231555119th Nov 2022 8:00 am
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jonjo6782
 


Member Since: 08 Nov 2022
Location: ireland
Posts: 4

Ireland 2007 Discovery 3 TDV6 S Manual Unknown ColourDiscovery 3

There was no communication with either the epb module or the ecu when it's plugged in
  
Post #231555919th Nov 2022 9:47 am
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