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So check if any parking sensor is short? There is a harness for 4 rear senors that need to disconnect when taking off rear bumper cover. Not sure if they can be tested individually though.
 
Discussion starter · #22 ·
So check if any parking sensor is short? There is a harness for 4 rear senors that need to disconnect when taking off rear bumper cover. Not sure if they can be tested individually though.
Hi. If it was a specific sensor wouldn’t Vida tell me so? For example “front left inner” Or “rear right outer” etc ? For this reason I’m doubting it’s a sensor.

my car has 6 front snd 4 rear I think, if it’s a case of checking each sensor it’s going to be a long and costly process!!
 
Hi. If it was a specific sensor wouldn’t Vida tell me so? For example “front left inner” Or “rear right outer” etc ? For this reason I’m doubting it’s a sensor.

my car has 6 front snd 4 rear I think, if it’s a case of checking each sensor it’s going to be a long and costly process!!
If one sensor is short circuited it is not possible to detect which one it is by software. All sensors share same power wire probably.

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Looking at that fault, would you lean towards it being a sensor or maybe the wiring loom?
Try take off or open the right side of rear bumper cover and disconnect rear sensor harness, see if the error message is different.
Do same if front harness is easy to access, which I don't know.

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Discussion starter · #27 ·
Whe
Try take off or open the right side of rear bumper cover and disconnect rear sensor harness, see if the error message is different.
Do same if front harness is easy to access, which I don't know.

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When I disconnect front bumper loom the error code disappear
 
So it’s either one of the front sensors or the loom? I really can’t believe an expensive and advanced program like Vida doesn’t tell you exactly which sensor is causing the issue!!
It is like a bulb is gone on Christmas tree, you have to see it to know which one it is.
Or something tripped the breaker in house, you have no way to know which wall outlet is the problem.
 
Discussion starter · #33 ·
Update. I removed the front left outer most sensor (the one by the wheel arch) this is the one that I brought brand new and replaced. Re scanned with v dash and the code has disappeared !!

message on dash has now changed to park assist UNAVAILABLE , service required (before was TEMPORARILY UNAVAILABLE)

to confirm my suspicions I re inserted the sensor and removed the second one and the error came back and did not clear, so the issue is definitely happening from around the first sensor.

I had an old bmw sensor lying around which is exactly the same style as that one so I tried that and it came back with the original error.

could It be possible that it’s the wrong part number causing this? I’m pretty sure it was the correct sensor I ordered originally.

part number 32209364
If someone could double check it’s the right sensor I’m happy to share my vin as I don’t have access to Vida anymore.
 
Can't offer any insight but I recently started getting start stop needs service and Park assist temporarily unavailable. It's going to dealer tomorrow. It was fine parking sensors beeping when parking in garage, and the next morning both errors. I'll let you know what dealer finds
 
Discussion starter · #35 ·
Can't offer any insight but I recently started getting start stop needs service and Park assist temporarily unavailable. It's going to dealer tomorrow. It was fine parking sensors beeping when parking in garage, and the next morning both errors. I'll let you know what dealer finds
I think your issue might be related to the back up battery (small battery under hood)
 
At this point, you can check the voltage and current goes to each sensor, and see if it is normal. Also the voltage on the loom when disconnected. If the power wire doesn't have the right voltage, then it could be anywhere from the loom to the controller module.
 
Discussion starter · #38 ·
At this point, you can check the voltage and current goes to each sensor, and see if it is normal. Also the voltage on the loom when disconnected. If the power wire doesn't have the right voltage, then it could be anywhere from the loom to the controller module.
Forgive me I’m not familiar with electronics too much. How would I check these? Could I use a power probe ?
 
Forgive me I’m not familiar with electronics too much. How would I check these? Could I use a power probe ?
It is easy to measure voltage, get a $10 multimeter and watch some how to use multi-meter video. Maybe need to poke into the wire in loom with a needle.
If the voltage on power wire on the loom drops significantly after sensors are connected, there is definitely some issue. Then you want to measure the current drew by the sensors. If it is normal range, then the power supply got problem of big resistance, or bad contact pin somewhere.
 
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