48v Battery Malfunction Message

less to go wrong with the standard diesel one. with the mild hybrid, when you stop in traffic does the engine cut off straight away? can you adjust the timing of when it stops and starts? the mild hybrid ones have not arrived in Ireland yet they are due this month.

I have the standard 2.8 non hybrid one.
 
less to go wrong with the standard diesel one. with the mild hybrid, when you stop in traffic does the engine cut off straight away? can you adjust the timing of when it stops and starts? the mild hybrid ones have not arrived in Ireland yet they are due this month.

I have the standard 2.8 non hybrid one.
The engine shutting off is determined by the hybrid battery voltage level. I've had my engine shut off while driving 50 ish miles an hour, it's seamless and the only way to tell is the tachometer drops to zero.
 
The engine shutting off is determined by the hybrid battery voltage level. I've had my engine shut off while driving 50 ish miles an hour, it's seamless and the only way to tell is the tachometer drops to zero.
thats the petrol / gas hybrid? the Diesel mild hybrid is different, its 48v mild hybrid with a small battery. (4.3 ah)
 
Over here in the U.S., 'hybrid drive system' error messages are not uncommon, and are most often due to the 12v battery getting low. Mine was replaced after about a year, and haven't had any such issues since. It would not surprise me if it's the same error termed differently, and if I were driving across the outback for weeks, I'd definitely bring a spare battery, as the car can't be started with the 12v battery having too little charge. The vehicle should have come with a jump box included, or better yet, a switch to send power from the hybrid battery to the 12v to allow starting.
 
thats the petrol / gas hybrid? the Diesel mild hybrid is different, its 48v mild hybrid with a small battery. (4.3 ah)
My apologies, I was indeed referring to the US variant and have zero knowledge of the Diesel variant.
 
less to go wrong with the standard diesel one. with the mild hybrid, when you stop in traffic does the engine cut off straight away? can you adjust the timing of when it stops and starts? the mild hybrid ones have not arrived in Ireland yet they are due this month.

I have the standard 2.8 non hybrid one.
No, you have the push the brake hard for it to stop, if you push on it lightly it won’t.
There is a setting to adjust something, I don’t remember off the top of my head.

Even when I have it turned on, it doesn’t last all that long. It always ends up starting the car again within 90 seconds or less, when it isn’t “unavailable”. But I always have the AC and ventilated/heated seats going.

It doesn’t seem to do anything coming, but my only reference point is an older 2017 Hilux.
 
Thanks OP for posting. Do you think your batteries got wet and caused this alert?

Any pop up alarms since the s/w upgrade. Is the patch in s/w a version of the 3.0 package or a dot release?
You and I have remarkably similar Land Crusier photos....

Hood Protector - 1 (12-29-15).webp
 
Hello!!!! This has struck a chord for me. My husband and I bought a Toyota Prado vx 250 2025 model. With the mild hybrid diesel engine in June 2025, to do a trip around Australia. In November/December we found out, after a major water ingress event of 1-1.5 glasses of water visually entering the vehicle and running down the A frame pillar into the front left passenger footwell (glove box/fuse and connector area), there was a defect in the roof seam at the back left side. It was so hard for Toyota to find they water tested relentlessly. They ended up doing a pressure test and the car has never been the same. Immobilisation events, sudden 48v battery warnings, car won't enter sleep mode, alarm goes off every day, if not every other day, struggles with power, struggles to turn over if we use the cargo, (many more issues with sensors and the app) and Toyota has said they could not avoid the issue or some such thing. I'd have to look at the email again. But either way, they are refuting there is even an issue with the car and telling dealerships not to investigate with a proper 48v specialist (have been told this first hand by one of the many dealers we met with). Which I found out... Only like 10 of these people in Australia. I am curious if anyone else got it this bad? Yours sound like maybe it's not as bad as ours???? But I read the whole thread and took pictures. It looks/reads to me, personally, in my experience, like there is a bit of a "push back" (lack of a better word) stance from Toyota about their new 48v tech and when it malfunctions. Which is interesting as this is the first of the diesel hybrid kind... Right? I'd be interested to hear anyones thoughts on this. Sadly, we just happened to get the one off the rack that the machine needed a calibration to seal the roof, and didn't. That's what we have been told.
here in Europe /Ireland /UK all new land cruisers are the mild hybrid diesel ones. In Ireland there are not many of the mild hybrid ones on the road yet, as they have only arrived in the last few weeks.
 
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