IS300h Start button can take 4 or 5 presses to start car

[howsyourself]

Hi all,

I have a 2013 IS300h and for a while now I have been putting up with the car taking up to 5 presses of the start button to turn the car on.

I have tried a new Battery in the key (I only have one key, so cannot try another) but it didn’t help any.

Has anyone else managed to resolve this issue?

Thanks in advance,

 

[Rabbers]

You were right to try changing the fob Battery, which immediately solved a similar starting problem I once had, also, as it happens, with an IS300h. And, as you say, the need for a new Battery would have been made clear one way or the other by using a second key.  I think you are going to need to visit a Lexus dealer or an electronics specialist, but, before you do, I would check to see if your fob is perfectly clean with everything tight and in place inside and out.

 

[matt8]

Might be time to trickle charge the car 12v Battery. If it's more responsive, time for a new 12v Battery.

[agent_dess]

2013- maybe time for a new 12v Battery I would have thought 

[howsyourself]

Thanks for this. I will try it with another Battery and see if that helps

[agent_dess]

Just be careful, the 2013/14 have known to kill the media unit by changing the Battery.  I would maybe get Lexus to change it for you.  

[PaulWhitt20]

The Battery is not one you can pick up and do yourself from Halfords. The going rate from Lexus is about £250. 
 

My wife had a similar issue in her Jazz where the key was not always detected and it could take a few presses to start. The start button was replaced out of warranty free of charge as a technical bulletin had been raised for faulty start stop button.

[McRattlehead]

I changed my 12v Battery last week as i was getting random warning lights and car not unlocking.The voltage had dropped to 11.4v ,the temperature has not been above 6c for over a month.

Fitting the Battery was quite easy and there are many videos on you tube if you are unsure,i found a longer 10mm socket fitted every nut.

I got the replacement Battery from Lexus Parts Direct by mail order the next day mine cost £139 + £6 delivery.