Electrical faults and battery problems with Toyota Hiace 2018

Hey buddy, I had a similar problem with my 2015 Toyota Hiace diesel. Also had problems with the engine control unit. My car was playing similar games to yours, especially with the lights and battery. The thing is: It really was a fault in the engine control unit. The engine control unit is known to control the important functions of the engine, such as fuel injection and ignition timing. So if this goes wrong, it can lead to serious problems. In my case, the engine control unit actually had to be completely replaced. My mech sorted everything out properly. It wasn't a small thing, but not a total disaster. You should probably get a specialist in as soon as possible before it gets worse. Hope this helps you!

(Translated from German)

Hey, thanks for sharing your experience, that could be really helpful. It sounds like I have the same problem. Do you remember how much it cost you to replace the engine control unit? And were there any other problems afterwards or did everything go smoothly? I'm looking forward to your answer!

(Translated from German)

Hey, I'm glad I could help you a bit. In the end, I spent around €1000 on replacing the engine control unit. Don't be shocked by the price, everything ran like clockwork afterwards. Since the visit to the mechanic, the electrical problems have disappeared. The flickering of the lights, the weak battery, all gone. The interruption in terminal 15 was also rectified - that reassured me more than anything else. I haven't had any further problems since then. Hope you have the same luck - fingers crossed!

(Translated from German)

Thanks a lot, buddy! That's really reassuring to hear. Of course, €1000 isn't a lot to pay, but if everything runs like clockwork again afterwards, it's probably worth it. And to be honest, I'm beginning to realize that it's probably necessary. I will see a professional and hopefully solve this problem soon. Thanks again for your help, I really appreciate it!

(Translated from German)

I have a problem: my engine won't accelerate after a head gasket change.

(Translated from French)

It's possible that the timing might be off after the head gasket change. I would recommend checking the timing marks on the camshaft and crankshaft. If they are not aligned correctly, it can cause the engine to run poorly or not accelerate. If you're not comfortable doing this yourself, it would be best to have a mechanic look at it. Please keep us updated on your progress. Do you have any other questions?