The "1Err" symbol suddenly appeared. What could usually be the reason for this?

The trunk suddenly won't open, and it's showing that the trunk is unlocked. What could be the reason?

19w km, the vehicle suddenly stalls while driving. What could be the issue?

What could be the reason for the sunroof suddenly not opening, guys?

Have you ever experienced driving 10 kilometers every day and suddenly noticing a time difference of exactly one hour, without any minute discrepancy? What could be the reason for this?

The transmission light on your car suddenly turned on for a few minutes and then went off. Sometimes it lights up while driving, but it hasn't come on in the past few days. What could be the reason?

In a 2019 manual vehicle, if the steering wheel buttons suddenly stop working and after resetting and reconfiguring, the buttons still don't respond, what could be the reason?

Car enthusiasts: Sometimes when driving a small car, the D gear won't shift up. The RPM suddenly goes up, but the gear doesn't match. What could be the reason?

What could be the reasons for not being able to shift gears?

What could be the reasons for not being able to shift gears?

The "1Err" symbol suddenly appeared. What could usually be the reason for this?