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MFischer

Electrical faults and battery problems with Toyota Hiace 2018

Hey guys, I have a problem with my 2018 Toyota Hiace, gasoline, already has 234928 KM down. Recently noticed general electrical problems, error stored, lights are getting dim or flickering, and the battery is also dying when starting. I suspect that it has something to do with the interruption of terminal 15. I recently had a bad experience at the mechanic, so I'm now turning to you. Have you had similar problems? What was your experience with your mechanic? Any advice would be appreciated!

(Translated from German)

Summary of the thread

A 2018 Toyota Hiace owner is experiencing electrical issues, including dim or flickering lights and a dying battery, potentially linked to an interruption of terminal 15. A similar case involved a faulty engine control unit, which, when replaced, resolved the electrical problems. It is suggested to consult a specialist to diagnose and address the issue before it worsens.

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6 comment(s)

VickyJaguar

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!

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MFischer (community.author)

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!

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VickyJaguar

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!

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MFischer (community.author)

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!

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maarou

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

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TOYOTA

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HIACE