Thinkpads Forum

Hello guys,

T420s isn't recognizing the bluetooth so I tried another cable. Didn't work.
Tried another bluetooth, didn't work either.

The switch to turn off all connections work just fine so I know the cable is good... Not sure what to go from here. It seems really unlikely that the bluetooth connector is broken

Any thoughts?

Same on my T420.
Tried another modules and cables with no luck.
I have found many threads at Lenovo forums about BT problems on T420/T420s, barely all of them are ending up with a mobo replacement.
So I bought cheap CSR BT 4.0 mini-adapter from aliexpress and forget about this problem.

Everyone: in the security/password setting, there are items that you can disable or enable. There are several among ethernet, wireless and one of them is bluetooth. Make sure you get that one enabled just in case.

Cheers, thinkpadcollection