how to turn off backup alarm in October 1, 2012 Prius model?

You need to go in through the CANBUS. You can do it if you have the tool or the dealer can do it. "Off" in this case still means it beeps once.

 

Correct.
Dealers are independent businesses, some will do it for free, some will charge you.
If you want additional gauges, a scangauge II will do this job as well, but if you do not want more gauges the $150ish pricetag is excessive.
ScanGauge II ODB Scan Tool + Digital Gauges + Trip Computers - PriusChat Shop
If you have an Android phone or tablet Torque software and a bluetooth to OBDII adaptor is pretty cheap.
Torque — OBD2 Performance and Diagnostics for your Vehicle
Amazon.com: Vgate Bluetooth Scan Tool OBD2 OBDII Scanner for TORQUE APP ANDROID: Automotive

 

are you sure it's the october first model, and not the september 30th?

 

Jimbo, are you saying the Scangauge II can reset the nuisance beeps on its own? How do you know what to do? My dealer made a hash out of my settings, I don't need gauges, but I don't want to go back there.

 

It can set it to one beep, it is an x-gauge.

Gen 3 Line 105 Google Sheets - create and edit spreadsheets online, for free.

 

I did it with my Tablet and a $29 OBD2 reader

 

I went to the dealer shop to disable the annoying backup beep that sounds continuously of my Prius V 2012, but the technician charged me $63. I am fed up with the annoying voice and also the super charge of this 2 minutes job.


Somebody may think a backup beep is a great feature. But I did not. Only problem is this beep is very loud and is only inside the car. It cannot be heard by those behind you as you would expect.


I got some clue on toyotanation club that a small elm327 can get this job done. I hooked up my newly ordered Blue color Viecar elm327 which support both computer and Android system.


Out to the car and plugged the Viecar V2.0 ELM327 device into the OBD port. Although it can be used both on computer and Android system, I would like to get this easy job done on my phone via Bluetooth. I need to download and install TORQUE software on Android device. After activate the Bluetooth on my phone, open Bluetooth setting, search Viecar 2.0 Bluetooth, enter password 0000. When the device was well communicated with Bluetooth, run software and come to the main menu to set some basic setting.

After get the device talk to ECU, Enter the main menu and then did some job as following:


Type and send: AT SH 7c0

Returns: OK


Type and send: 21ac

Returns: 61 AC 00 (00 means continuous reverse beep)


Type and send: 3bac40

Returns: 7F 3B 78

Returns: 7B AC (the job’s done)


Type and send: 21ac

Returns: 61 AC 40 (40 means only a single beep now)


Cheap $10, 2 minutes job

 

I wrote a small Android app to do the programming part for you. Still needs the Bluetooth ELM327 type device, but simplifies the process for those who might find it too complicated. Does cost £1.

Also allows you to alter the seat belt beeps as well.

 

I'm ot sure why, but I'm getting a different response from the 21ac command. It responds:
61 AC 90 6A

It also won't accept the change as shown above? Is it my adapter or is something else going on? It's a 2012 Prius Two, base model, no frills.

 

did you buy the one pound app?

 

No. I was doing it through the ELM327 terminal.

Update: Did try the app, and Carista, and neither worked.

 

ah, thanks. i was wondering if anyone had tried the app. you might try pm'ing him, to get his attention.

 

Dealership fixed it for free. Returning my adapter to get a better one.

SM-N910T ?

 

brilliant.