Toyota Repair Problems? Ask a Mechanic for Answers ASAP
Hello. My name is ***** ***** I will be helping you today.
Bad contacts on the battery or the battery itself would give you the same results whether you hit lock or unlock.
When only one function of the remote doesnt work the problem is either in the vehicle or the remote itself is bad.
Since your other remote works fine the problem is obviously not in the vehicle.
So through process of elimination we can say the one remote is bad and needs replaced.
Let me know if you need anything further.
Please be sure to rate my service so I get credit for helping you today.