Traveller Battery Sensor Issue

I had something similar happen with my Traveller. Same symptoms – error message, weak lights, sluggish starts. Did you check the voltage across the battery when the engine is running? It should be around 14V. If it's lower, that points to a charging problem, maybe a bad alternator or regulator. But maybe start with that sensor you mentioned.

Thanks for the tip! I haven't checked the voltage while the engine's running yet, but will do that tomorrow. Where exactly is the battery sensor located on the Traveller? And did the voltage fluctuate a lot when you had the issue? That could help me narrow it down.

Honestly, I didn't bother locating the sensor myself. Diagnostics are a pain. I just took it to a shop. They told me it was a defective battery sensor causing the charging issue. They swapped it out and all was good. Probably worth getting it checked professionally, especially with all those symptoms.

Thanks, I appreciate the advice. I took it to a workshop, and they confirmed it was a faulty battery sensor. The total repair cost was 315€. Everything's working fine now, so thanks for pointing me in the right direction!