Do Not Sell My Personal Information Jump to content


Help Key fob issues


Recommended Posts

Hi guys

Right I drove home yesterday parked the car RX400H 2005 And locked it as always with the key fob, this morning it won't open the doors ? Or deactivate the alarm system ? 

I have changed the Battery and instead of the LED light showing bright when you push the buttons it just blinks on and off ?

Any ideas ???

Thanks in advance

John 

Link to comment
Share on other sites


I'm assuming (dangerous I know...) your RX hybrid is the same as my RC in that the car, once Ready and driving, everything operates from the traction Battery. The 12v only operates the entry/locking system and powers up the computers for the hybrid start. 

Again, guessing but the alarm back-up Battery would be attached to (part of) the alarm module?

Just throwing suggestions out there ...

Link to comment
Share on other sites


Change the Battery in the key fob again. Presumably, you put a brand new one in but that doesn't guarantee it wasn't faulty, even though it was new.

I may be wrong but I don't think the key receives any sort of handshake or acknowledgement from the car but simply sends a signal to the car for it to act upon. In other words, I don't think anything on or in the car is the culprit, especially as you say "I have changed the Battery and instead of the LED light showing bright when you push the buttons it just blinks on and off ?", which suggests that there isn't enough power in that Battery to light the LED and send the required signal.

Link to comment
Share on other sites

Join the conversation

You can post now and register later. If you have an account, sign in now to post with your account.

Guest
Reply to this topic...

×   Pasted as rich text.   Paste as plain text instead

  Only 75 emoji are allowed.

×   Your link has been automatically embedded.   Display as a link instead

×   Your previous content has been restored.   Clear editor

×   You cannot paste images directly. Upload or insert images from URL.

 Share



×
×
  • Create New...