View Full Version : handbrake warning alarm??
caineroad
05-20-2013, 12:58 AM
anyone know if it is possible install a handbrake warning alarm to prevent driving while the handbrake is on?
YarisSedan
05-20-2013, 02:22 AM
I thought all yaris came with one already I found out mine had one when I was driving testing the hand brake it started beeping like crazy till it was released
caineroad
05-20-2013, 02:23 AM
No my doesn't, I have a hatchback not sedan though maybe it's diff?
YarisSedan
05-20-2013, 02:25 AM
My girlfriend has a 09 hb and hers has a chime too it sounds like the seat belt chime
caineroad
05-20-2013, 02:30 AM
http://www.yarisworld.com/forums/showthread.php?t=12101
Not all Yaris have the handbrake alarm. See above click.
If anyone know how to install one ? I assume just connecting the handbrake light or wire to the seat belt chime?
Kar98
05-20-2013, 02:46 AM
Your parking brake alert should be that you're not going anywhere ;)
CTScott
05-20-2013, 07:12 AM
The parking brake switch has one yellow wire. When the brake is up that wire gets grounded, so you can install a 12V beeper and connect its + lead to ignition switched power and its - lead to that yellow wire.
nookandcrannycar
05-20-2013, 08:09 AM
http://www.yarisworld.com/forums/showthread.php?t=12101
Not all Yaris have the handbrake alarm. See above click.
If anyone know how to install one ? I assume just connecting the handbrake light or wire to the seat belt chime?
As one post on your link suggests, perhaps it is a pre 08 thing. Mine doesn't have one either.
caineroad
05-20-2013, 10:58 AM
The parking brake switch has one yellow wire. When the brake is up that wire gets grounded, so you can install a 12V beeper and connect its + lead to ignition switched power and its - lead to that yellow wire.
Looks simple, but if I do that, it seems like the beeper will sound even when the car is not moving (ignition on, but not driving, in Park mode)
Is it possible to make something that only beeps when car is driving?
CTScott
05-20-2013, 11:30 AM
Looks simple, but if I do that, it seems like the beeper will sound even when the car is not moving (ignition on, but not driving, in Park mode)
Is it possible to make something that only beeps when car is driving?
That is correct.
It would be possible to make one that only beeps when the car is moving, but that would take a bit of extra electronics to do so.
caineroad
05-20-2013, 11:32 AM
That is correct.
It would be possible to make one that only beeps when the car is moving, but that would take a bit of extra electronics to do so.
Not sure why some Yaris have this fitted but some don't.
Similarly the seat belt chime only sound when the speed is over 20km/h(equivalent to xx miles), if it is easier, how possible is it to hook up the handbrake wire to seat belt chime?
I would really like to have one that works only when the car is moving, can you briefly explain where i have to connect to make this work, I will try my best to figure it out myself.
Thanks
CTScott
05-20-2013, 12:53 PM
Not sure why some Yaris have this fitted but some don't.
Similarly the seat belt chime only sound when the speed is over 20km/h(equivalent to xx miles), if it is easier, how possible is it to hook up the handbrake wire to seat belt chime?
I would really like to have one that works only when the car is moving, can you briefly explain where i have to connect to make this work, I will try my best to figure it out myself.
Thanks
I think it may have just been a feature added in 07 or 08. If that is the case, changing the cluster to a newer might make it work (although the ebrake switch is an input to the body ECU, rather than the cluster).
Bridging the seatbelt and ebrake would be way more difficult than adding a motion based signal to the ebrake.
If you want to experiment with a beeper, tie the - side to the yellow wire on the ebrake switch and the + side to the pink wire on the ignition switch connector.
caineroad
05-20-2013, 02:52 PM
I think it may have just been a feature added in 07 or 08. If that is the case, changing the cluster to a newer might make it work (although the ebrake switch is an input to the body ECU, rather than the cluster).
Bridging the seatbelt and ebrake would be way more difficult than adding a motion based signal to the ebrake.
If you want to experiment with a beeper, tie the - side to the yellow wire on the ebrake switch and the + side to the pink wire on the ignition switch connector.
Yea..not feeling like changing the cluster, i like my 2006 version.
But I will try experiment with the beeper like you suggested, thanks
caineroad
05-20-2013, 03:28 PM
I kind of found a solution, it may work ok, but not what it ideally for
I will bridge a motion sensor with delay timer... let's see if this will work well
CTScott
05-20-2013, 03:40 PM
I kind of found a solution, it may work ok, but not what it ideally for
I will bridge a motion sensor with delay timer... let's see if this will work well
You would be better off with an accelerometer. The Yaris vibrates more when stationary than when it is moving.
caineroad
05-20-2013, 03:42 PM
You would be better off with an accelerometer. The Yaris vibrates more when stationary than when it is moving.
oops, i was gonna say motion, like a regular household motion sensor that works with 12V and adjustable sensor and timer. If I can find something smaller I would also use that.
Accelerometer is good idea, let me see what ebay has to offer.
CTScott
05-20-2013, 03:50 PM
I could actually make you a device that works off the VSS (speed sensor) wire. My Demetricifier (which lets a km cluster work as a Mile one) interprets that signal, so driving a beeper instead of manipulating that signal would be very easy.
caineroad
05-20-2013, 03:53 PM
I could actually make you a device that works off the VSS (speed sensor) wire. My Demetricifier (which lets a km cluster work as a Mile one) interprets that signal, so driving a beeper instead of manipulating that signal would be very easy.
Sure, it might actually be a lot easier at my end, if it is not too expensive, Im really just looking for an economical way to do this little beeper. Thanks:smile:
caineroad
05-20-2013, 07:50 PM
I could actually make you a device that works off the VSS (speed sensor) wire. My Demetricifier (which lets a km cluster work as a Mile one) interprets that signal, so driving a beeper instead of manipulating that signal would be very easy.
I did some research of what is a speed sensor wire, it exactly like you said, outputs a signal to instrument cluster. If so any chance to just tap into that wire to the positive lead, and the negative goes to the yellow handbrake wire?
screenprintr
05-20-2013, 09:22 PM
Now that you mention the Hand brake alarm, I don't remember hearing one nor even seeing a light.
Maybe it's just my old age.
CTScott
05-20-2013, 09:36 PM
I did some research of what is a speed sensor wire, it exactly like you said, outputs a signal to instrument cluster. If so any chance to just tap into that wire to the positive lead, and the negative goes to the yellow handbrake wire?
You can't drive something with it, as it will drag the signal down. You could use a transistor to drive the buzzer off of the speed signal, since the signal sits at ground when the car is not moving and pulses at a fairly high frequency when the car is is motion.
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