Audible 5 Beep Alarm Every +/- 4 Minutes

[Mark.Hudson]

Hi Mark Hudson here. I have checked all previous posts but have not been able to find the answer to this problem. I have just bought a used SC430 and there are a couple of problems. Fistly the audible alarm which consists of 5 high pitched beeps. They occurr at at start up and continue for as long as the car is running and repeat every 3 to 4 minutes. I notice thet the seet belt warning has been de-activated and wonder whether this could make a contribution. I also note thet changing the wheels can cause an alarm situation. The wheels on this car have been changed to chromed alloys.

Thanks in anticipation for your help.

Kind Regards.

Mark Hudson.

[lizzy borden]

Hi Mark Hudson here. I have checked all previous posts but have not been able to find the answer to this problem. I have just bought a used SC430 and there are a couple of problems. Fistly the audible alarm which consists of 5 high pitched beeps. They occurr at at start up and continue for as long as the car is running and repeat every 3 to 4 minutes. I notice thet the seet belt warning has been de-activated and wonder whether this could make a contribution. I also note thet changing the wheels can cause an alarm situation. The wheels on this car have been changed to chromed alloys.

Thanks in anticipation for your help.

Kind Regards.

Mark Hudson.

Hi Mark. The beep is the car telling you the tyres are low pressure.

This is because the sensors are built into the original wheel valves. You need to get them swapped into the new wheels.

Gary

[Mark.Hudson]

Hi Mark Hudson here. I have checked all previous posts but have not been able to find the answer to this problem. I have just bought a used SC430 and there are a couple of problems. Fistly the audible alarm which consists of 5 high pitched beeps. They occurr at at start up and continue for as long as the car is running and repeat every 3 to 4 minutes. I notice thet the seet belt warning has been de-activated and wonder whether this could make a contribution. I also note thet changing the wheels can cause an alarm situation. The wheels on this car have been changed to chromed alloys.

Thanks in anticipation for your help.

Kind Regards.

Mark Hudson.

Hi Mark. The beep is the car telling you the tyres are low pressure.

This is because the sensors are built into the original wheel valves. You need to get them swapped into the new wheels.

Gary

Thanks Gary.....Unfortunately the wheels were already on the car when I bought it. Should I purchase these sensors from Lexus or can tha alarm be deactivated? Thanks again for your initial help. Kind Regards. Mark.

[lizzy borden]

Hi Mark Hudson here. I have checked all previous posts but have not been able to find the answer to this problem. I have just bought a used SC430 and there are a couple of problems. Fistly the audible alarm which consists of 5 high pitched beeps. They occurr at at start up and continue for as long as the car is running and repeat every 3 to 4 minutes. I notice thet the seet belt warning has been de-activated and wonder whether this could make a contribution. I also note thet changing the wheels can cause an alarm situation. The wheels on this car have been changed to chromed alloys.

Thanks in anticipation for your help.

Kind Regards.

Mark Hudson.

Hi Mark. The beep is the car telling you the tyres are low pressure.

This is because the sensors are built into the original wheel valves. You need to get them swapped into the new wheels.

Gary

Thanks Gary.....Unfortunately the wheels were already on the car when I bought it. Should I purchase these sensors from Lexus or can tha alarm be deactivated? Thanks again for your initial help. Kind Regards. Mark.

The module is behind the ashtray. I beleive it can be disabled by your lexus dealer but not sure what effect just unplugging it has. The sensors aint cheap! Try contacting the previous owner. He may know where they are.

Gary

[aquanuke]

Just disable it.

- put shifter on N, screw off shifter

- open up center console

- pull the whole heated seat module straight up, it will come up. disconnect

- you will be able to pull up the "back" part of the shift plate area (close to center console)

- once it's up, the only point holding it are two clips right below the radio

- pull the shift plate towards the back of the car and a bit angle up. jiggle a bit and it will come off

- once it's out, you will see the TPS unit right below the radio

- unplug BOTH plugs, one small on the right and one bigger one on the left

- put everything back and enjoy

[Jock in Epping]

Hi Mark

nice photos - has your car been resprayed? It looks very smart, will post pics of mine shortly. Have been thinking of getting a respray in the same colour so interested if you have done that?

cheers

Jock