Mondeo Hybrid High Voltage Error

Sounds familiar. I had a similar issue with my Mondeo (not the hybrid though) a while back. Kept getting battery warnings and the car felt like it was running on fumes. Have you checked the voltage sensor? That was my problem.

Voltage sensor, huh? Where is that located exactly, and how would I go about checking it? I'm not super tech-savvy but willing to give it a shot before throwing money at it.

Honestly, I'm not entirely sure where it's located on the hybrid. I just know that's what the workshop guys told me was causing the battery drain. If you're not comfortable poking around, I'd strongly suggest taking it to a professional. Could save you a bigger headache and potentially a larger bill down the road.

Yeah, you're probably right. Bit the bullet and took it in. Turns out the hybrid battery was heavily discharged, likely due to a faulty cell. Repair cost me 290€, they also replaced the voltage sensor. Thanks for the nudge in the right direction!