Buttons.

Looking to install an ignition interrupt switch. Although, I'd like to disguise it. Thinking about using a Standard dashboard switch for an option my truck doesn't have. I don't have the Auto LSD or the DAC options. Based on the Owner's Manual (OM), these appear to be simple push buttons that will fit the dash openings.

Couple questions.
1. Could either of these be used as a simple On/Off push button?
2. Sources for either button, or limited to Toyota?

My thought are to push ON to enable the ignition. Release to OFF to disable the ignition. I think a button like this would be a good disguise because it would appear to be normal equipment.

Thoughts??

 

No input as to how to make it happen

but I like the idea!

 

If I were to do something like this, I might look at disabling the starter.
I wouldn’t want to risk having something happen and the truck stall while I was driving.

Maybe use a switch on the ground side of the starter relay.
I’m not at all saying to do this, or that it would work.
But I’d definitely think about what the system I am disabling.

 

Or fuel. I’ve occasionally pulled my fuel pump relay when parked at a remote trail or surf spot. If a thief somehow defeats the immobilizer, they still won’t go more than a few yards. It’s pretty easy to wire a kill switch for the fuel pump, just when you select a factory switch make sure it’s not a momentary switch. AutoLSD is momentary IIRC

 

Something like turning on the parking lights and pushing the fog light switch on; activating 2 relays with their switches wired with the normally open contacts in SERIES to each other.

Then cut the start wire and connect to the other contact on each switch.

Try and start the truck and it won't start.

Or use IG1 or 2. Maybe the key chip reader...

 

I see nothing going wrong with this at all.

 

Guys, right now, I'm trying to sort out the switch. I'll dig through the circuitry at a later time.

Yes, the switch can not be a momentary switch. It needs to have contacts similar to a SPST.

I was looking at SPST rocker switches, but they seem obvious as add-on items. So, I began to look at OEM type switches for options that are not on my truck. My truck is not equipped with AutoLSD or DAC. Also, neither of these options is readily apparent when looking at a Tacoma. Sometimes the best hiding place is in plain sight.

 

I was thinking along the lines of using what's existing, like a combination lock per sé. Hidden in plain sight. But that's not what you're looking for.
Good luck.

 

Instead of hacking into the factory wiring I would suggest a ravelco, it’s super sleek and very robust.

https://www.ravelco.com/

 

You can use a relay to interrupt the starter wire and the high beam switch (flash) to activate the relay so you can start your car.

 

Thanks. That ravelco is quite complex for install and expensive.

Looking at the schematics for the Starting and Ignition system. I think it would be pretty straight forward to use the IG1 and IG2 circuits to block the starter, coils and injectors. No crank. No fire. No fuel.

This would give a camouflaged switch and a triple engine shutdown. I have doubts a thief is going F around with trouble shooting spending precious time. Even the OBDII port would have trouble bypassing this set up. Of course, they could always tow it off.

But, I think they would find a more susceptible target.


I need to think more about this set up. Concerned about parasitic battery drain.

I have time. Not much of a need for such measures in this town. My neighbor has a 2020 Dodge Ram with all the goodies parked his driveway, not 20 feet away from an '06 Toyota. A much more valuable prize.

 

On my last truck I got a cigarette lighter and wired the clutch safety switch into one of the lighter plug. If you left the cig. lighter pushed in the truck started normally. If you pulled the cig. lighter slightly out the truck wouldn’t start. If you took the cig. lighter with you into the mall, there was no way to start it unless you were carrying a cig lighter.

 

Thanks for the idea on the cig lighter. Similar to my thinking for camouflage.

I have plans to replace the cig lighter with a USB port for the HU upgrade. That "slot/hole" is reserved for another purpose.

 

problem is the manual Tacoma has clutch switch over ride so that would be an easy work around.

 

There will be no parasitic battery drain unless whatever you decide to do leaves a relay energized as part of your lockout.

What I described above uses 2 smaller loads, 1 actually as the fog lights don't turn on without the headlights, to turn on and energize 2 relays. You don't want to steal available amperage for starting by using the head lights or high beams.

Me thinks you're over thinking it. But, you do you. It's all good.

 

If you have a manual trans, you could run an additional switch with the clutch switch, say a pressure switch under the brake pedal so both clutch and pressure switches need to be closed to crank. Or even better an additional switch to the fuel pump relay so it'll crank and maybe start but stall shortly after.

As with any profession, one spends time thinking of how to do it better, faster, so on. A professional thief has spent more time you ever would on how to steal a car or prevent stealing a car. They could hide, watch you start your car, see where your reaching for, then know where to look when they make their move. If they want it bad enough, they'll get it. What you can do is slow them down so getting it takes more time. Noisy alarms, wheel clamps, even the 20 seconds it takes to defeat the club all slow them down & brings attention to them.

 

@Larzzzz

Agreed.
My concern is I'll forget to turn it off, opening the NO relay, then it remains closed for an extended time.
Parasitic draw, leading to a depleted battery due to ID10T error of my own doing.

Yeah, I probably am thinking too much. Kind of a habit as an engineer.
You know, I can design something that is idiot proof. But pretty soon the 1st idiot will seek help.

 

just put a latched timer on the relay. Maybe set at 12 hours.

 

Nothing can be made/designed id10t proof. They're too smart. You wouldn't think so, but ohmfg, the things I've seen.

As for your fear of leaving something on; use circuits that turn off with the key, or use the brakes and parking lights. One will never be left on. The other you'll notice pretty quick if you do.

As an electrician, I don't have formal education as an engineer, but I looooove controls and have repaired, modified, designed controls for equipment in the textile, food processing, and chemical manufacturing industries. Among others.

My cdo(ocd), wants something like this to be easy, unobtrusive, hidden right in front of you, and to look like it belongs there. Putting a toggle switch into a switch blank....

@6 gearT444E that time delay relay will be a parasitic draw that he's trying to avoid. And to set that relay so he can only start it 2x a day doesn't work on those errand running days.

 

Hey, that's a nice idea to use the brake light circuit to power the low side of the relay. You always need to step on the brake to start or engage tranny. Then press the "ignition enable" button........turn key, start engine. Smooth, simple, elegant, hidden, neat. Plus, if the ID10T driver forgets to release the "ignition button", then no parasitic draw.

You understand my idea of "hidden right in front of you". Toggle switch screams add-on....... IMO so do rocker switches, especially when the Tacoma uses push buttons.