Keyless Entry issues

#1
Tried searching the forum so apologies if this specifically has been addressed (feel free to redirect me).

it looks like the keyless entry stopped working, and it’s both keys so definitely not a battery issue.

Yesterday morning it was working like normal. But yesterday afternoon neither the unlock nor lock would work, from any distance.

However, today I can sometimes get the unlock to work if I’m right next to the car. However the lock won’t work no matter how close I am.

I’m not sure where to start. Some of the troubleshooting guides suggest reprogramming the remote but that doesn’t seem like the issue (nor do they say how to do it). Bit I’m also agraod of hosing the system if I try to reprogram with this existing issue.

Has anyone seen this before?

2010 Carolla LE, no modifications, good condition for age with 55k miles
 
#2
Slight update, both the lock and unlock button are simply interment, though unlock seems a little more reliable (if you call the current status reliable).

I may just need to take it into a shop. Doesn’t appear to be something I can diagnose without time and possibly a computer, and I have neither.
 
Top