Hello, I drive a 2016 Toyota Land Cruiser. Had the same symptoms as you some time ago and it was actually the ad-blue system, or more precisely the ad-blue tank, that was defective. My tip: don't leave a fucker on it and go to a reputable garage, better safe than sorry. This is definitely a serious problem and should not be underestimated. On my car, the entire tank had to be replaced. The good news: after that the problem was solved and all the warning lights were off. Hope that helps you. Take it easy!

(Translated from German)

Hey, thanks for the quick reply and the tip! Experiences like that are super helpful. Can you still remember what you paid for the tank replacement back then? Has anything else come up since then or has your cruiser been running like clockwork ever since? Thank you!

(Translated from German)

Hey, you're welcome! I'm glad I can help with my experience. Where should I start, yes, the replacement of the Ad-Blue tank cost me around €1620. But since replacing the tank and having it checked by the mechanic, the problem with the Ad-Blue system pressure being too low has been solved. As a result, the warning light is no longer illuminated. No, there have been no further problems since then and my cruiser purrs like a kitten. So don't worry, as soon as you get it fixed, your ProAce should be running smoothly again!

(Translated from German)

Hi, Wow, that sounds a bit expensive, but if it fixes the problem, it's certainly worth the investment. I'm glad to hear that everything went well for you afterwards! That definitely reassures me. So I'll make an appointment with a reputable garage first thing tomorrow morning and get it sorted out. Thanks again for the helpful info, I really appreciate it! You are a star!

(Translated from German)