VE Wagon Parking warning ECU location

[Plainwhitevy]

My Series 2 Sportswagon has (had) a warning sensor for if something wandered into my path when reversing. A year ago it stopped working. Not particularly bothered, but it has a warning buzzer that sounds whenever I start and there is a warning in my dash all of the time about it. This is irritating to the point that I now want to fix the stupid thing.
Last service Holden diagnosed it as a faulty parking sensor ECU and quoted me $450 to replace. I can buy a replacement ECU and do it, but not sure where it is. The service guy at Holden said I need to drop the rear bumper to get to it, but I can’t see even Holden putting an ECU outside of the body shell. Can anyone tell me where it is located?

 

[krusing]

The Reversing Sensor Module is adjacent the Battery,
You need the remove the internal moulding around that area.
You will see a black box just up a little, and further in from the battery.
[As per image attached]
Don't buy a new one, get one from a Wrecker, shouldn't be no more than $30.
Dealer price probably $300 inc. + fitting

When they say remove the bumper, they would of been talking about replacing an actual reversing sensor you would assume.
If you have a Faulty Sensor, that is probably the Fault/MIL that is being displayed, best to get it scanned to see which one it is.
If it is only a reversing sensor, the wreckers price approx. $20,
That's when you need to remove the bumper cover to replace it.
Remembering, you will have to try and find one of the same colour of your car,
If not, get a spray pack and paint it yourself.

Some of these Service Reception people have no idea what they are saying
Remove the Bumper to replace the Reversing ECU, NFI.
I guess it's a case of -
" If you cant dazzle them with brilliance, Baffle them with Bull"

 

[RossK]

Sorry to say, but don't trust your dealer, check it out yourself.
Our VE had an intermittant rear parking sensor fault that the dealer could never find, this started when the car was 1 year old.
When the car was 6 years old it stopped altogether, diagnosed as faulty ECU by the dealer.
Cost was prohibitive so I checked it out myself and found the wiring harness from the sensors to the ECU unplugged.
Re-connected it and they have been fine for the last 3 years.

 

[Plainwhitevy]

Thank you very much Krusing and Rossi! I’ll get on to it. Now I am clear what I am looking for I’ll locate it and check the connections, then replace the module if it still shows the fault.
Not today though..... it’s bl@@dy hot here in Adelaide. I’ll let you know how I go.

 

[krusing]

I forgot to mention,
the Reversing Sensor Loom route, and plug,
is located behind Left Rear Wheel, up behind the Bumper Cover.

 

[Plainwhitevy]

Just starting to look for a replacement ecu, came across this on thE bay
https://rover.ebay.com/rover/0/0/0?mpre=https://www.ebay.com.au/ulk/itm/163827493084

Do I need to programme a new ecu, or is this for something different?

 

[krusing]

They are heaps cheaper at the Wreckers.

They should be a hot swap, especial if they are the same part number,
Is that the same part number as yours ?

 

[Plainwhitevy]

I don’t think they are selling a part. It looks to me that you pay, then they give you an address to send your ecu, they reflash it with your VIN number and send it back.

 

[Fu Manchu]

As far as I knew, these were not VIN matched. A modular extra sometimes installed by dealers.

*Edit:
Just learned something new
Went digging. They are VIN matched and connected to the low speed serial data circuit.
A tech 2 should be able to do that, or, yes, the service in the link.

I'd be inclined to connect up a second hand one and just see if it works anyway.

 

[krusing]

Thank you very much Krusing and Rossi! I’ll get on to it. Now I am clear what I am looking for I’ll locate it and check the connections, then replace the module if it still shows the fault.
Not today though..... it’s bl@@dy hot here in Adelaide. I’ll let you know how I go.

Did we have a result/fix for this ?,
as it would be interesting to find out.