Turn off lock/unlock beep

Hi everyone,

just got a 2010 Prius (Australian base model), and looking for information on how to turn off the beeps when locking/unlocking the doors. I've found info on turning off the seat-belt warning beep, and changing the reversing beep to single by using the OBDII connector, but nothing on the CAN bus codes needed for the lock/unlock beeps.

Or is there another way? (the dealer wants to charge $60 to do it)

Any help appreciated.
Dean

 

Thanks David for the tip about the rocker switch. I also just use the handle to unlock, but it still beeps/chimes.
BTW I just successfully changed the reversing beep to just one beep using an ELM327 cable and the puTTY
software on my windows PC. So there should also be a code sequence for the lock/unlock chime, since it also is a user
customisable feature.

 

Hi BigModernMess, Yes the 2009-2011 base model doesn't have a head unit screen like the 2012-on models (at least here in Australia), just a single line LCD display (I think). The manual says that these user customisable settings can be changed using a computer. Thanks to the good folk here at PriusChat, the code sequence for changing reverse beep is available. I'm guessing there must also be a code for the lock/unlock beep. Thanks Bisco, the Techstream software might be worth looking into, at least its cheaper than the dealer. No worries DavidA.

 

Progress report:

There seem to be some undocumented ecus at locations 712, 724, 7c6, and 784.
ecu 7c6 seems to be the same as the Aircon ecu at 7c4 (except response to request 1a: read ecu id)
ecus 712 and 784 don't seem to support any requests, but 724 responds to request 2701: security access level 1 with a seed.

display ecu 7c0 memory mapping:
2100 61 00 40 00 60 01
2120 61 20 A0 80 00 01
2140 61 40 00 00 00 01
2160 61 60 00 00 00 01
2180 61 80 00 00 00 01
21a0 61 A0 82 10 00 01
21c0 61 C0 00 00 00 01
21e0 61 E0 C0 00 00 00

2100 map 40 00 60 01 suggests location 02 should be supported, but 2102 request seems to fail (maybe need security access?)

memory location a1 can be changed to 8 values: 00,08,10,18,20,28,30, and 38
which suggests it could be "smart key operation signals (buzzers)" in user customisable settings, but
no change to buzzer volume. Listed in PriusV codes as "Key Remind Sound"

My cheap clone ELM327 v1.5 can access the main body gateway ecu 750 using:
>AT CAF 0 (turn off automatic formatting)
>AT SH 750 (set 11 bit CAN header to 0750)

then example of access to a sub ecu:
>40022131
breakdown:
40 = sub ecu number
02 = number of bytes in request
21 = read data request
31 = the location
response: 40 03 61 31 B4 00 00 00

main body sub ecu 40 memory mapping
40022100 00 e8 58 01
40022120 00 00 f0 01
40022140 00 00 06 01
40022160 08 00 00 01
40022180 00 00 00 01
400221a0 FA 00 00 01
400221c0 00 00 00 01
400221e0 C0 00 00 06

31 was the only location I could change using request 3b:
>40033b31xx
breakdown:
40 = sub ecu number
03 = number of bytes in request
3b = write data request
31 = location
xx = any value from 00 to ff

response:
40 03 7F 3B 78 00 00 00 (78 = request pending)
40 02 7B 31 00 00 00 00 (7B = request successful)


smart key sub ecu b5 location 31 can also be changed:
>b5033b31xx

xx = any value from 00 to ff

But neither of these changed the lock beep

Seems that only need to push power button to ACC to access these sub-ecu's

Any insights welcome
cheers,
Dean

 

Found it.
Turn car to acc on (ig on and ready should also work)
Sequence:
>AT CAF 0
>AT SH 750
>40063B14xx20

where xx =
8A flashers, no beep, both smart entry and remote can lock/unlock
82 no flashers, no beep, both smart entry and remote can lock/unlock
0A flashers, no beep, remote doesn't lock/unlock
02 no flashers, no beep, remote doesn't lock/unlock (guess)

I think there's more customisable settings to find, as locations 12 and 15 on sub ecu 40 can also be changed,
also smart entry/smart key system can be turned off over at sub ecu b5 location b5:

>b5043bb5xy

where xy =
2C turn off smart entry/smart key system (so must touch key to power button to start car)
0C turn on smart entry/smart key system

y can have values of 0,4,8, and C, but not sure what it does yet

 

Just to clarify turning off lock/unlock beep (and other customisable features),
here is a bit mask for location 14 of sub ecu 40 ("main body" ecu):
>AT CAF 0
>AT SH 750
>40063B14wxyz

w=0,1,8,9 x=0,2,8,A y=0,2 z=0,1,2,3

1 remote unlock works (1=on, 0=off)
0
0
1 beep on lock/unlock (1=on, 0=off)

1 flashers on lock/unlock (1=on, 0=off)
0
1 door open warning when locking (1=on, 0=off)
0

0
0
1 panic button operation (1=on, 0=off)
0

0
0
1 time to auto relock if no door opened after unlock
1 (0=30sec, 1=60sec, 2=120sec, 3=60sec)

 

Hi David,

I checked the Carista website and they seem to already have all the customisable features I have found so far.
My car already unlocks all doors at once - and there is no option to change this in my user manual. Maybe this
is a difference between American Prii and Australian Prii. Extending the dome light timeout sounds like a great idea thanks.
I found using:

>AT CAF 0
>AT SH 750
>40063B12xyz0

x = 0-F, y = 0 or 8, z = 0,2,4,6

bitmask:

1 lights time out (2 bits)
1 00=15sec, 01=7.5sec, 10=30sec, 11=15sec
1 interior + foot light on after power off (1=on,0=foot lights only if set below)
1 lights on after door unlock (1=on,0=foot lights only if set below)

1 lights on if smart key detected approaching vehicle (1=on, 0=off)
0
0
0

0
1 faint drivers footlight when vehicle is in Drive (1=on, 0=off)
1 footlights (1=0n,0=off) for both power off and unlock
0

Originally I was 3860. For lights timeout extended to 30sec, I set to B860:
>AT CAF 0
>AT SH 750
>40063B12B860

cheers,
Dean

 

Hi Ned,

Glad you found the information useful.

For the auto-relock, it maybe that there have been some changes in the programming between my 2010 model and your 2015 model (there was a minor update to the Prius in 2012), or that there were always differences between the U.S. Prius and the Australian Prius.

...or maybe I got it wrong, so if I get a chance I will try it on my Prius again.

cheers,
Dean

 

Sorry @NedLlew, I didn't get any more chances to look again at the Prius 2010. I now have a Prius C 2012, And I can confirm it works the same for Lock/unlock beep. I typed in (not including the '>' - thats the ELM327 command prompt):

>AT CAF 0
>AT SH 750
>40022114
40 06 61 14 9A 00 02 00

>40063B148A000200
40 03 7F 3B 78 00 00 00
40 02 7B 14 00 00 00 00

>40022114
40 06 61 14 8A 00 02 00

So now the first byte has changed from 9A to 8A, and my doors lock/unlock with flashers no beep(s).

You are welcome @pizzachef - so now it seems to work with all Gen3 models.

@Ateeque, I think its not possible to disconnect bell/buzzer manually - it has many functions, and probably on
some computer board.