Grand C4 Picasso battery replacement

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Eddie1970
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Joined: 05 Oct 2020, 17:01

Grand C4 Picasso battery replacement

Post by Eddie1970 »

Hey guys, I've done a search and surprisingly couldn't find a topic on main battery replacement. There must be one.... Surely?

Anyway, my battery is on its last legs (50% ish and stop /start not kicking in), a decent cold spell will probably see it off with me working permanent night shift and forever starting it in the dark!

I've sourced a battery for £93, correct spec, size, cca to suit the stop /start system.

I wanna change it myself but just read something for the car system needing to be registered with the new battery for it to function properly!
Is this true for a 2017 grand C4 Picasso 1.6 blue HDI flair model? Or can I just go ahead and swap the batteries over?

Any info or tips greatly appreciated.

Cheers 🍻

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GiveMeABreak
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Re: Grand C4 Picasso battery replacement

Post by GiveMeABreak »

These cars have a voltage maintainer and a battery charge status unit, so the battery (probably an AGM battery) must be of the same level. If the battery is t he same specifcation as the previous one one it should be fine but must be the correct level (L1, L2 or L3).

If you pop your VIN up I should be able to advise on the correct specs.

But do follow the guidance here for replacement or you could end up with electrical issues.

BSI Reset / Battery Disconnect / Reconnect Procedure

Eddie1970
Posts: 3
Joined: 05 Oct 2020, 17:01

Re: Grand C4 Picasso battery replacement

Post by Eddie1970 »

Cheers GMAB, the vin is
VF7**************[VIN obfuscated, can be read by forum staff]

Hi again, just double checked the battery and it's L3, so identical to the one I've found online.

Just to confirm the procedure cos it looks a bit long winded :-

1) open bonnet and drivers window, keep doors closed but not locked, take fob away 3+ metres.

2) Wait 5 mins, remove battery holding bracket, disconnect +ve, slide battery forwards, then disconnect -ve. (don't let it touch terminal), and replace battery on stand.

3) Reconnect - ve, slide battery back, reconnect +ve, replace holding bracket, wait a further 3 mins.

4) Turn on side lights through open window, insert fob into reader, press st/St. (no pedals)

5) Press st/st again to switch off ignition, then remove fob, lock doors using handle or fob.

6) Unlock doors using handle or fob then start engine properly, checking for faults, switch off sidelights.

** my car tends to auto lock if I walk away with the key after about 30 seconds. Will this be prevented with the bonnet open, or will I have to switch this facility off in vehicle settings?

Thanks, Eddie.

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GiveMeABreak
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Re: Grand C4 Picasso battery replacement

Post by GiveMeABreak »

9811722280 is the part for the battery - you need a L3 EFB (Enhanced Flooded Battery) 760A/70AH for the Stop & Start system fitted to your car.

At (4), when you have started the ignition only, wait 1 minute with it in this state on your model to allow electrical systems to reinitialise before switching off ignition. Then proceed with (5).

After (5) you are just testing that the locking and unlocking is working - so no need to wait. Just unlock then go in and reconfigure your options / customised settings in the head unit.

Stop & Start may not work for a while as the Battery Charge Status Unit will need to 'calibrate' as it measures the battery status at rest overnight.

Eddie1970
Posts: 3
Joined: 05 Oct 2020, 17:01

Re: Grand C4 Picasso battery replacement

Post by Eddie1970 »

Cheers Marc, I've ordered the battery.

Will report back with results.

Thanks for your help. 🙏

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GiveMeABreak
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Re: Grand C4 Picasso battery replacement

Post by GiveMeABreak »

No worries, just make sure you stick to the timings as it gives the various system ECUs time to shut down and save their data. Just be sure to watch the terminals don't short and don't connect them up the wrong was as somebody did recently resulting in blown boards.