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lexpert, Lexus Master tech
Category: Lexus
Satisfied Customers: 2100
Experience:  Master Certified with lexus, 8 years experience with Lexus
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2015 Lexus is 250 key stopped working. Won't unlock and lock

Customer Question

2015 Lexus is 250 key stopped working. Won't unlock and lock but will start car. Also noticed that now where I open my door no interior lights and courtesy lights come on.
JA: Have you checked the vehicle's manual for this?
Customer: Yes
JA: Are you fixing your IS 250 yourself? What have you tried so far?
Customer: I changed the battery in the fob but no luck
JA: Anything else you want the mechanic to know before I connect you?
Customer: No that's it
Submitted: 8 months ago.
Category: Lexus
Expert:  david craig replied 8 months ago.

Hi Im David you probably need to take it to the dealer to have it reprogrammed....The key doesn't get programmed, the car does. The process requires a factory scan tool, your best bet is probably a trip to the dealer

Expert:  david craig replied 7 months ago.

just checking in to see how its going

Customer: replied 7 months ago.
I took it to the dealer and they found a blown ECU fuse. Changed out fuse and everthing is working properly.
Expert:  david craig replied 7 months ago.

glad to hear. have a good day.