Replace Remote Battery - Is200

HoodRich · May 10, 2015

Hi guys,

Recently, my remote for my is200 has been working intermittently, it appeared to be a dying Battery. I meant to get a new one this week, but didn't end up driving the car at all. So, I decided to take her out for a spin this evening, and the car would not unlock. The light on the remote looked very dim.....so, i thought I would open the door with the key...big mistake! The alarm went off and I could not disarm it as the Battery was dead.

Thought I would run upstairs and get the spare which I last used 2 years ago. That one was completely dead. Even the light wouldn't flash when I pressed the buttons on the spare. Being late on a Sunday evening, I couldn't find a store which has the Battery in stock. I had to pull the negative terminal off the Battery as the alarm was just going crazy.

I can easily pick up a replacement Battery for the remote....CR1616....but am worried now that I might have to reprogram something to get it all working fine again.

Would it just be a matter of replacing the batteries in the remotes, putting the negative terminal back on the car Battery and disarming the alarm?

Any advice would be appreciated.

Dave_Wigley · May 10, 2015

That would be the first step and then try the to disarm the alarm I've done it before and it worked.

AmbroseJohn · May 10, 2015

Are you sure it's not a CR1632, most of the other lexus remotes are.

ColinBarber · May 10, 2015

everything should work as it did before once you have batteries that work. The car is programmed to work with your keys, not the other way around, there isn't a setting for the key to forget.

HoodRich · May 11, 2015

Ahhh, thanks for the reassurance guys. I would have a really bad day at work today worrying myself about this. At least now I have some assurance all will be ok ;-)

Ambrosejohn - Google tells me it's a cr1616, but I also opened the remotes to confirm. Definitely cr1616.

HoodRich · May 11, 2015

Hi Guys,

I'm very happy to say I have sorted out my issue. Picked up the batteries this afternoon, connect the negative terminal on the car Battery, the alarm started sounding, then I just disarmed it as per normal. Doors are locking and unlocking as per normal.

Thanks for the advice.