2010 RX 450h - Key fob battery issue?

RXboii_786 · July 1, 2023

Hi All,

I have the key fob that slides down to reveal a Battery cover with 4 tiny screws. The Battery cover is missing however (it was when i got the car) and because of this the Battery is not 'snug'. Sometimes the Battery comes loose and the key fob doesn't work, so i have to slide the cover and press in the Battery to make it work.

I have tried stickiing a piece of cardboard in to press the Battery down but it eventually moves and doesn't work. Does anyone know where i'd get this Battery cover/plate?

I've looked on eBay but they only seem to be the shells/cover, i.e. doesn't look like they include this Battery cover.

I haven't tried Lexus yet, assuming they may want to replace the entire fob?

Thanks

Stefan213 · July 1, 2023

You can get a used blank key fob with 40-50£ and with techstream in 5 minutes you can pair it with the car

Herbie · July 1, 2023

5 hours ago, RXboii_786 said:

Hi All,

I have the key fob that slides down to reveal a Battery cover with 4 tiny screws. The battery cover is missing however (it was when i got the car) and because of this the battery is not 'snug'. Sometimes the battery comes loose and the key fob doesn't work, so i have to slide the cover and press in the battery to make it work.

I have tried stickiing a piece of cardboard in to press the battery down but it eventually moves and doesn't work. Does anyone know where i'd get this battery cover/plate?

I've looked on ebay but they only seem to be the shells/cover, i.e. doesn't look like they include this battery cover.

I haven't tried Lexus yet, assuming they may want to replace the entire fob?

Thanks

Two ways to do this:

1. The Battery numbers indicate the size, so a 2016 is 20mm diameter x 1.6mm high; a 2032 is 20mm diameter x 3.2mm high. It may work if you can get a Battery of the correct diameter but higher than what you need. For example, if the fob takes a 2016, try a 2032 and it may hold it better.

2. Get a whole new key cut from this guy on eBay and transfer your own electronics into it.