CT200h Key Fob Battery Issue

I've got a 2018 Lexus CT200h (hybrid engine) and I'm getting a 'key battery low' warning. Keyless access doesn't work anymore, there's an error stored, and unlocking is a pain. Mileage is at 192304 km. Guessing it's just the key fob battery, but has anyone else run into this?

4 comment(s)

Ugh, that's the worst! I had something similar happen with my old BMW. The key fob started acting up, and then bam, dead as a doornail. Keyless entry was kaput, and I swear the car was judging me every time I had to manually unlock it. Check the voltage, could be a simple fix.

Voltage? You mean of the car battery, or the battery in the key fob itself? And if it's the fob, is it a special type of battery?

Sorry, should've been clearer. I meant the fob battery. On my Bimmer it was a standard CR2032 button cell, but Lexus might be different. Honestly, unless you're comfortable messing with electronics, just swing by a workshop. I tried replacing mine myself and nearly bricked the whole thing. Cost me way more in the long run!

Cheers for the advice! Ended up just getting the battery replaced at a local shop, cost me 37€. Problem solved!

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