Hi guys, I have no sound from the parking sensor box on the dash. I think before I had the head unit changed that the sound came from the box on the dash. I lost the Japanese voice and think the sound for the parking sensor was working after but can't remember. Anyone know if you can adjust the volume? The lights on it work just no sound. Cheers

4 hours ago, Wozzer100uk said:

Hi guys, I have no sound from the parking sensor box on the dash. I think before I had the head unit changed that the sound came from the box on the dash. I lost the Japanese voice and think the sound for the parking sensor was working after but can't remember. Anyone know if you can adjust the volume? The lights on it work just no sound. Cheers

 

Hi Mark,

 

That looks aftermarket to me.

 

Do you have a 'sonor' section in your lower dash panel ?

 

It is/was switchable, and the sensitivity could be altered in the OEM HDD unit (depending on which head unit was originally fitted.

Hi Rojie,

No I don't have anything on the dash for it. I have googled the picture and it comes up as a Toyota corner sensor. It seems to be all Japanese sites though .Maybe the original head unit had the settings into but I upgraded it. Any advice if it can be changed easily? Cheers

Edited May 14, 20251 yr by Wozzer100uk

Also having this exact problem.

Bought our 2007 Alphard in June, Japanese voice on start up everyone, audio from parking sensor box on dash.

Since then, Japanese voice has gone - not sure how!? And audio from parking sensor box has gone with it. the lights work, so we just use those to gauge how far away we are from anything.

Would be so good to get the audio back though. Any help greatly appreciated

Thanks guys

On 2/15/2026 at 7:38 AM, Arran said:

Also having this exact problem.

Bought our 2007 Alphard in June, Japanese voice on start up everyone, audio from parking sensor box on dash.

Since then, Japanese voice has gone - not sure how!? And audio from parking sensor box has gone with it. the lights work, so we just use those to gauge how far away we are from anything.

Would be so good to get the audio back though. Any help greatly appreciated

Thanks guys

Update, my brother is an electrician and used his multimeter. Turns out it was the speaker itself that has no electricity running through.
I will be replacing the speaker and hoping this fixes the issue