2011 Yaris T Spirit Reversing Sensors

[Ken57]

Problem with my TPA400 factory fitted reversing sensors. As the instruction book states there is a single beep when reverse is selected, however when reversing up to even a solid object (eg a wall) there are no warning beeps from the sensors.

I have checked each individual sensor by selecting reverse gear and each sensor actually 'ticks' when obstructed.  Since the 'system' appears to be OK (by the single initial beep) and each individual sensor appears to be working it leads me to the conclusion that it must be the  actual 'beeper/speaker', or the wiring to it.

Can anyone please tell me where the actual beeper is located.  I have read that some vehicles are fitted with an on/off switch but I don't think so on my car.

Cheers and thanks for any help.

[FROSTYBALLS]

Sometimes the on/off switch is positioned behind the boot trim near to the light cluster.

[Heidfirst]

1 hour ago, Ken57 said:

Problem with my TPA400 factory fitted reversing sensors. As the instruction book states there is a single beep when reverse is selected, however when reversing up to even a solid object (eg a wall) there are no warning beeps from the sensors.

I have checked each individual sensor by selecting reverse gear and each sensor actually 'ticks' when obstructed.  Since the 'system' appears to be OK (by the single initial beep) and each individual sensor appears to be working it leads me to the conclusion that it must be the  actual 'beeper/speaker', or the wiring to it.

Can anyone please tell me where the actual beeper is located.  I have read that some vehicles are fitted with an on/off switch but I don't think so on my car.

Cheers and thanks for any help.

If you look on https://www.toyota-tech.eu/Aim/Aim.aspx?pubtype=AIM&menuitem=2 & input the necessary info in relevant fields you will see the installation instructions for the kit - this should help you locate where the module is.