Tire pressure constantly too low on Opel Vivaro 2001 - experience and tips wanted

Hey, I actually had a similar problem with my 2004 Opel Astra. I was experiencing sporadic faulty communication between the ECUs, not exactly the same but maybe a similar case. When I took it to the garage last time, they found that some cables from the on-board computer to the tire pressure monitor were corroded and not transmitting signals properly. They had to remove the old cables and replace them with new ones. It was a somewhat laborious task, but apparently not unusual for cars of this age. As a result, the communication between the ECUs worked perfectly again afterwards and I had no further problems with the tire pressure. It was definitely a serious matter, as a faulty tire pressure system can lead to real safety issues. Maybe it's something similar with your Vivaro. I would definitely recommend having it checked by a professional. Hope this helps you! Have a safe journey!

(Translated from German)

Hey, thanks for the reply and the tip! It's exciting to hear that there was such a problem with the control unit and the corroded cables in your Opel Astra, I wouldn't have guessed that. Can you remember how much this repair cost you? I just want to get an idea of what I might be looking at. And were there any other problems after this repair or did everything go smoothly? Thanks for the encouragement, by the way. I'm already a little more reassured.

(Translated from German)

Sure, no problem! I had to pay €955 to repair the sporadically faulty communication between the control units, but it was worth it: fortunately, I've had absolutely no more problems with it since then. And as for your tire pressure: after the visit to the mechanic, the problem was finally solved for me too. It's not a small thing, but you shouldn't hesitate to have it done - safety first! So, all in all, it was a success. Don't let it put you off!

(Translated from German)

Oh wow, I didn't think it could be that expensive, but you're right, safety first. It's reassuring to know that there have been no further problems since your mechanic visit. I think I'll take my Vivaro to a specialist as soon as possible and hope that I have a similar problem. Your experience has really helped me, thanks again! I hope I can help you with a tip one day. Take care and have a safe journey!

(Translated from German)