GOLDSc300

Hello everyone ,
The key fob on my 2010 RX350 stoped working. I replaced the battery (CR1620), but the fob is still not working, however I can start the engine if I bring the fob right to the stat button. The spare key fob works okay. Any ideas what could I do? Thanks in advance.

Clutchless

Try another battery and make sure the battery is inserted correctly.

GOLDSc300

I tried two brand new batteries and made sure the battery is inserted correctly. The fob is still not working...

RX in NC

Did you clean the internal battery contacts?

liu328

I believe the key fob battery should be CR1632. Make sure you use the correct battery.

GOLDSc300

Thank you very much for all great comments. I ordered new batteries (next day delivery with Amazon). This time CR1632. Inserted a new CR1632 and the fob is working! The reason I previously used CR1620 is that my both fobs had CR1620. I guess both batteries CR1620 and CR1632 are fitting the fobs. It appears the new batteries CR1620 were not good. Again, thank you for your help.

liu328

Glad to know it is a simple fix.