Got in the car this morning and started the engine.

Bongs from the display, Hill descent and Stability control not working, brake pedal also very heavy.

I turned it off and tried again 30 minutes later, but nothing got cleared.

Call my local Land Rover service dept (I have warranty) and they want me to recover the vehicle to themselves so they can look at it. I was told they'd look at it between scheduled repairs and that courtesy vehicles are booked 4-5 weeks away.

So I'm left with sharing my wife's Fiesta until it's sorted out. 2021 P400e Autobiography

That is the auxiliary battery failed, I had exactly the same happen and Land Rover Assist came out and replaced it and a split controller that had failed. It was just charging the main 12 volt battery and not the auxiliary. 2023 P440e SE Dynamic on order -cancelled

2022 HSE Dynamic P400e

2017 Discovery 3.0 HSE Silicon Silver Nimbus interior and a few extra toys SOLD

2013 HSE Black, Orkney Grey, Ebony Seats and Ivory Interior SOLD

2006 HSE

Plus a few other cars inbetween!

Ah, thanks.

I'll let Land Rover know. At least it's a first place for them to look. 2021 P400e Autobiography

Is your warranty with LR? If so call out LR assistance, if they can't fix it and have to get your car recovered to your dealer they will arrange a hire car for you.

At least that was my experience on my many call-outs. Tim
RRS sold and replaced with a Skoda Kodiaq after appalling RR Dealer experience and LR inability to supply new cars in any sort of reasonable time frame..

The guy picking it up put a code scanner on it.

ABS Control unit failure, and about 30 other associated failures.

Lets see how LR deals with it.

I have LR Warranty, but not the Assistance add on unfortunately. 2021 P400e Autobiography

Car finally being fixed today. Diagnosed as a power control unit failure resulting in not enough power going to the aux battery. 2021 P400e Autobiography

Same fault as mine as I mentioned in my July 1st post. 2023 P440e SE Dynamic on order -cancelled

2022 HSE Dynamic P400e

2017 Discovery 3.0 HSE Silicon Silver Nimbus interior and a few extra toys SOLD

2013 HSE Black, Orkney Grey, Ebony Seats and Ivory Interior SOLD

2006 HSE

Plus a few other cars inbetween!

Well my aux battery is (as far as I know), ok. It was just the power control unit not sending it voltage. 2021 P400e Autobiography

The Land Rover Assist guy replaced my aux battery more as a precaution because he thought wise to do so. A good guy!  2023 P440e SE Dynamic on order -cancelled

2022 HSE Dynamic P400e

2017 Discovery 3.0 HSE Silicon Silver Nimbus interior and a few extra toys SOLD

2013 HSE Black, Orkney Grey, Ebony Seats and Ivory Interior SOLD

2006 HSE

Plus a few other cars inbetween!

LR are trying it on a bit. Saying one of my brake discs is corroded and needs replacing. The car only had an MOT a couple of months ago and the brakes were fine then. 2021 P400e Autobiography

jimbg wrote:

The Land Rover Assist guy replaced my aux battery more as a precaution because he thought wise to do so. A good guy!

I replaced both the main and auxiliary battery around 4 months ago, told the BMS via IID tool about the main one but the BMS would not let me do the aux????
Stop/start wasn't working before change but is now so i would suggest it doesn't matter about telling the car it has a new aux battery  2015 L494 SDV6 3.0 HSE Loire Blue
2006 L320 4.2 Supercharged - Gone
2009 BMW X5 M-Sport - Gone
2007 L320 2.7TDV6 SE Buckingham Blue - Gone
2011 Jaguar XFS 3.0V6 Diesel - Gone
2009 (59) L320 Facelift 3.0TDV6 HSE White Wrap - Gone
2008 BMW X5 M-Sport - Gone
2005 Audi A6 3.2V6 Quattro S-Line - Gone