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Do you think the garage is responsible?

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Discussion Starter #1
In January, my disabled wife's Chevy Volt was vandalised. Due to Covid-19, it eventually went to the repair garage in August. We delivered a fully working car, with damage to the bodywork, to the garage. After about three weeks the garage notified us that the car was ready for collection, however, they told us that it has a "Service High Voltage Charging System" notification was showing, and it couldn't be driven on electricity. The man said: "at least it could still be driven on petrol!"

The repair involved removing the n/s front wing and door, and knocking out some dents, plus a few bits of trim etc.. This was all done during the heat wave in August. We refused to take back a broken car, so the garage had an electrical test run on it, that showed the following:
Engine Control Module - P1E00 00 - Hybrid Powertrain Control Module 2 Request MIL Illumination - Failed
Hybrid Powertrain Control Module 2 - P0AA6 00 - Hybrid/EV Battery Voltage System Isolation Lost - Failed
Hybrid Powertrain Control Module 2 - P1FFF 00 - System Isolation / Coolant Level Sensor Fault - Hybrid/EV Battery Charging System Disabled - Passes and Failed

After reading the forums, they said it needs a new Coolant Level Sensor, and this is a common fault with these cars and not their responsibility. Therefore, it's a coincidence and nothing to do with them. The insurance company keep saying it did not happen as a result of the vandalism, which it didn't, it drove perfectly when we handed it to the repair garage. The insurance company got two of their engineers to look into the situation, who have been told by the garage that the forums say it is a common fault, consequently they have concluded that it is a common fault and nothing to do with them. I was not notified of the engineers visit to the garage and therefore not able to speak to them, they only received comments from the garage. No one told them that heat and vibration can cause this problem. This is all very one sided. We doubt whether they were even EV engineers.

If you put an electric car into a garage that is in good working order, it should surely come back to you in the same condition and not broken? This is totally unacceptable.

Finally, I understand this warning message can occur by disconnecting the main drive battery or by damaging the charging port. I would very much appreciate your opinions as we are now desperate, our broken car is still in the garage, and we are at a dead end with both the garage and the insurance company. Thanks for your help. Incidentally, we did not choose this garage, it was one of the insurance company's garages. We also informed the insurance company that we were concerned about an EV going to a garage that was not qualified to do electrical repairs. We also stated that we would hold them responsible for the electrics, as we were concerned about this situation. We were assured it would be fine.
 

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When my car went in for bodywork repairs it was taken to Drive Leicester, a Vx dealer to be isolated and then at the end to be powered back up.

I wonder if traction battery isolation needs to be done in a correct way rather than just jamming a plug back in.

Surely a garage cannot use hearsay from an uncontrolled forum as an excuse for handing a car over in an unuseable condition. It is far from common anyway, just one of the more discussed problems the odd user has experienced.
 

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I think Russ is correct. If you isolate the HV battery (pull the red plug located between the rear seats) without first disconnecting the 12v battery then the car has to be taken to an Ampera dealer to be reset. When my company car was involved in a minor bump the bodywork repair garage (Not an authorised Ampera dealer) took it to an authorised dealer for a safety check as well as resetting the HV system.
In any case if you deliver a car in perfect working order to a garage you are surely entitled to get it back in athe same or a better condition.
 

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Time to consult your solicitor . . .
 

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I'd imagine your insurance company should be part responsible in not sending it to an EV savvy garage. Or did they say the garage had suitable EV knowledge? I'm sure you could press them on this point. Maybe you could get an expert opinion from Bellingers, then tell the garage that the forums all trust Bellingers.
 

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I've disconnected the drive battery without first disconnecting the 12v battery and not had any problem. My son has a Volt in Texas and he had the same problem with the sensor. He bought a replacement but this didn't solve the problem so after a long while he took it to Chevrolet and they replaced the sensor AND its wiring quoting a short in the wiring as the main issue. Then they re-programmed the car. The bill was about $675 and my son seems to think that the bulk of the cost was for the re-programming. I'm sorry if this is a loose description, but, good luck.
 

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Discussion Starter #7
When my car went in for bodywork repairs it was taken to Drive Leicester, a Vx dealer to be isolated and then at the end to be powered back up.

I wonder if traction battery isolation needs to be done in a correct way rather than just jamming a plug back in.

Surely a garage cannot use hearsay from an uncontrolled forum as an excuse for handing a car over in an unuseable condition. It is far from common anyway, just one of the more discussed problems the odd user has experienced.
Thanks for your help. Obviously my wife's car should have been sent to a specialist like Bellingers, for them to isolate, prior to the body work being done, and then back again afterwards to power back up. I am still worried that in taking the wing off, the body shop could have damaged the charging port or more. Thanks again.
 

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Discussion Starter #8
I think Russ is correct. If you isolate the HV battery (pull the red plug located between the rear seats) without first disconnecting the 12v battery then the car has to be taken to an Ampera dealer to be reset. When my company car was involved in a minor bump the bodywork repair garage (Not an authorised Ampera dealer) took it to an authorised dealer for a safety check as well as resetting the HV system.
In any case if you deliver a car in perfect working order to a garage you are surely entitled to get it back in athe same or a better condition.
Thanks for your help. So obviously my wife's Volt now needs to go to somewhere like Bellingers, to have the electrics reset and checked. I also don't see how you can put a car in for body repairs, that is in good working order, and be given back a broken car. This car was MOT'd only two days before being taken in for repair, and it worked fine. Thanks again.
 

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Discussion Starter #10
I'd imagine your insurance company should be part responsible in not sending it to an EV savvy garage. Or did they say the garage had suitable EV knowledge? I'm sure you could press them on this point. Maybe you could get an expert opinion from Bellingers, then tell the garage that the forums all trust Bellingers.
Thank you, the insurance company did assure us that their appointed garage was capable of dealing with electric cars. We even put on the claim form that we would hold them responsible for any damage to the electrics, but they seem to be ignoring this. Thanks again.
 

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Discussion Starter #11
I've disconnected the drive battery without first disconnecting the 12v battery and not had any problem. My son has a Volt in Texas and he had the same problem with the sensor. He bought a replacement but this didn't solve the problem so after a long while he took it to Chevrolet and they replaced the sensor AND its wiring quoting a short in the wiring as the main issue. Then they re-programmed the car. The bill was about $675 and my son seems to think that the bulk of the cost was for the re-programming. I'm sorry if this is a loose description, but, good luck.
Thank you for your good wishes.
 

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I believe that the low fluid alarm is not easily reset using a standard OBD2 diagnostic reader but needs a deeper reset that only Vx garages can do.
This would be because it involves the HV traction pack which is deemed dangerous/expensive if alarms are routinely ignored/reset.
 

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I reset my Volts SHVC error myself with a VX nano that cost £70. See this thread...

 
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