508 hybrid wont start after hybrid battery removal and replacement help

[ManxViking]

Good evening all.

Brand new here after along time with Hyundai.

I have a 2012 508 hybrid and is a really nice car however was suggested to check the hybrid battery as wasn't allowing me to use pure zev mode.
Hybrid battery removed, disassembled and checked, all found to be ok, probably NI-MH batteries weak after 12 years and 125000 miles.
Refitted and connected correctly.
Now car won't start, just throws up STOP - Engine fault, stop the car.

Can engage gears and can release handbrake but as soon as I press to start the car, starts beeping with the sign.

Any advice gratefully received. Wondering if there is a reset procedure after removal or something I might have missed as haven't touched the engine at all.

Many thanks,

David

[RichardW]

Welcome along.

You'll need to get it on a diag computer to see what it's upset about.

[ManxViking]

After all faults cleared only shows a relay issue. I have the screenshot but don't know how to add on here? Will try to add now.
Thank you,
David

[GiveMeABreak]

As far as I'm aware these need specialist attention if removed. It also categorically states that the circuit breaker "must under no circumstances be refitted", so not sure if this will be any reason for it not to start. I know that if you actually replace the traction battery that it must be initialised with the diagnostic tool - but not sure regarding disassembly as these have to be done by people with specific training under regs.

[ManxViking]

Ok. Thanks Marc.
I have several pure electric cars and have the diagnostic equipment for everything to do with re-progamming and battery cells work as well as airbags, key coding etc. Maybe certain parts of the system are locked out without Peugeot's specific program.
Will see and update here.
Many thanks,
David

[ManxViking]

Marc,
You mentioned 'It also categorically states that the circuit breaker "must under no circumstances be refitted", so not sure if this will be any reason for it not to start.'
forgive my ignorance but what is the circuit breaker you've mentioned?
Thanks
David

[ManxViking]

Just thought I should update.

Car back up and running after getting the older version of diagbox working and going through the faults and sorting each.
Have started new thread on a malfunctioning rear electric drive motor gearbox assembly.

Thanks for your help and advice.

David

[GiveMeABreak]

I must of missed these posts David, sorry about that. There are specific circuits for the hybrid system, so can only assume there is a specific breaker that's directly related to the Hybrid ECU. It was a few few months ago now so can't recall exactly....

[ManxViking]

No worries Marc. Got the next issue to deal with now with the new post......