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o-ren-ishii



Member Since: 25 Jul 2023
Location: The Hague
Posts: 35
Netherlands 
P400e completely bricked
I have an interesting problem.

Few days ago the Defender didn’t respond to the keyfobs anymore. Upon inspection it didn’t open the doors anymore, Would’nt start, make strange noise, instrument cluster did nothing anymore.

Symptoms:
- doors wont open or close
- Electrical “driving” sound from the hood (p400e hybrid)
- Start stop unresponsive
- Car wont crank
- 12.5v at start battery
- Instrument cluster unresponsive
- Remote services not working
- pivi pro worked sometimes
- ceiling lights worked
- backdoor worked

Tried
- Starting with booster pack
- Reset by taking off minus from start battery and waiting a night
- starting with extra battery and booster pack

The car started two times and became responsive but stopped idling and after that went back to brick mode.

Of course my Gap iid tool didn’t work due to “activation “ problem so i dont know any error codes .

After this the car was brought to the dealer . They couldn’t get it from the flatbed because or parking/handbrake. They tried several boosters/ battery packs to jumpstart but the car didn’t respond to anything .
The day after i got a call “there is no problem, we put the car to the highvoltage charger and now it is working “ and a load of bullcrap that its all fine and dandy .
According to them “i should never have an empty hybrid battery because this created the problem”. I hardly charge the HV battery during this months overlanding trip and it never caused problems before so it sounds very convenient from them to point to.
Earlier we had problems (about a month ago) with the generator, in the end the starting battery drained and i got so many errors, both on instrument cluster and OBD. This problem sorted itself out by waiting and jumpstarting. This time i got similar errors on the cluster, so even more strange they think it an issue with either batteries.


I would very much like to find out what was the root of the problem instead of doing a hail mary and hope this doesn’t return soon.
Do any of you ladies&gentleman have any idea what could be wrong? Or had similar issues?

Last edited by o-ren-ishii on 23rd Oct 2024 11:56am. Edited 1 time in total
Post #1049523 23rd Oct 2024 10:43am
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lightning



Member Since: 23 Apr 2009
Location: High Peak, Derbyshire
Posts: 2848
United Kingdom 
That does sound like a firmware issue to me. lt could well have been fixed by re flashing or resetting the ECU.
Post #1049525 23rd Oct 2024 11:39am
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A1C6



Member Since: 15 Oct 2024
Location: Australia
Posts: 55
Australia 
I think there may be a fault in the battery pack, as I've heard that small things that shouldn't really stop the car from working like the trailer detection sensor (or something like that) misfunctioning do in fact brick the car. And, all the problems seem to be revolving around it not taking charge etc.
**probably wrong**
Post #1049603 24th Oct 2024 3:14am
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lightning



Member Since: 23 Apr 2009
Location: High Peak, Derbyshire
Posts: 2848
United Kingdom 
lt's going to be something like that.
Post #1049609 24th Oct 2024 6:59am
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o-ren-ishii



Member Since: 25 Jul 2023
Location: The Hague
Posts: 35
Netherlands 
Thanks guys.
There more i think about it I also suspect water in some electrical system on the bottom of the car.

Prior to the last incident I washed the car with a power washer. The accident before that we got stuck in the mud (waist deep) . And one few months ago the hybrid system stopped working (without error on screen only obd) after a few shallow river crossings.

I would be very interested to know if you know of other people who had similar “unexplainable” errors after water.
Post #1049612 24th Oct 2024 7:27am
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lightning



Member Since: 23 Apr 2009
Location: High Peak, Derbyshire
Posts: 2848
United Kingdom 
The power shower shouldn't have affected it but being stuck in waist deep mud may have a bearing on your vehicle's failure.

Although the Defender is designed to wade through up to a metre of water, l imagine if you stop moving in the middle of said water it would be much more of a test.
Post #1049642 24th Oct 2024 12:29pm
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o-ren-ishii



Member Since: 25 Jul 2023
Location: The Hague
Posts: 35
Netherlands 
Update in case somebody else has this in the future.

The car was towed to the dealer in Sofia - "Moto pfohe JLR". NEVER GO THERE, it is seriously the most unprofessional place I have ever been. Really they do not deserve the logo on the wall.

First the car got there on a flatbed. They couldn't get it off because it had no ignition, no electronic way of releasing the gear into neutral. The car wouldn't respond with even 2 external batteries hooked up to the starter battery.

In the end the car was winched off the flatbed onto the ground.
After that they kept the car for two days and stated "your problem is not a problem, we charged it was a JLR approved charger and now it's working". No more further investigation.

I tried to persuade them but they said I needed to go for a testdrive myself to figure it out. When they brought out the car the "service" manager crashed the car into the overhead door damaging the boxes on the roofrack. They refuse to get new boxes (500 euro a piece) or reimburse me for it. No communication possible, most horrible dealer on the planet.

Regarding the problem I suspect water in electronics maybe, because the issues resolves itself. But I don't know for sure since.. well see above.
Post #1051579 13th Nov 2024 10:50am
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TexasRover



Member Since: 24 Nov 2022
Location: Paris
Posts: 1086
France 2002 Defender 110 Td5 DCPU Chawton White
I am sure they said the same about cars and horses back in 1912, but I can't help but think that the P400e is not the most suitable car to go wading with or get stuck in waist deep mud in or to have the complicated electrons and software analysed and fixed somewhere in Sofia

The target market for the new defender is 'aspirational adventurer, with a lot of money' and or soccer mum/dad with clearly more lifestyle and money than the other one. Typically in the USA (money) or the UK (heritage) and anywhere else they can scrape by local SUV unfriendly regulations and tax rules.

Maybe in few years time when hybrid power trains are common, well understood and more robust... For now you probable would have found a 300tdi easier to deal with.
Post #1051584 13th Nov 2024 12:37pm
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