New Tacoma!

[AutoMechanic]

I think you are trying to get some kind of response from this. So, as a mechanic, if the push button is broken you would junk the vehicle?

No but you can’t replace it at home so it would have to be brought in for programming

 

[wpod]

146K miles??? the old Toy is almost broke in. I like Toyota and Ford trucks. I have both.

 

[OVERKILL]

Yeah but it’s not something you could do at home as it requires programming

The FCA ones don't and they are like $60.00.

 

[AutoMechanic]

The FCA ones don't and they are like $60.00.

Dang that’s impressive

 

[PimTac]

Sometimes I wonder if some people think they have to push the button with as much force as possible to start the car? You don’t even have to hold it down. Just push and release. The computer does the rest.

 

[OVERKILL]

Dang that’s impressive

Not really, it's how it should be, it's just a trigger to tell the ECM to change modes or start/stop the engine. Authentication is handled by the proximity sensor and the FOB, which is the same as it is even if you have a physical key.

 

[PimTac]

Anyhoo, back on subject. To the OP, congrats on your new Tacoma. It looks like a great truck and it will serve you well. Sorry for the thread drift.

 

[AutoMechanic]

Not really, it's how it should be, it's just a trigger to tell the ECM to change modes or start/stop the engine. Authentication is handled by the proximity sensor and the FOB, which is the same as it is even if you have a physical key.

I agree it’s definitely not that simple on most of them.

 

[OVERKILL]

Well if the button gets stuck how are you going to start it? It’s wrecker time. And yes I’m not convinced you only need to replace one coil with electronic ignition that’s completely opposite of what I was trained and learned.

Right, but they also taught you to replace all the wheel bearings. I'd be questioning everything you've been taught at this point.

Getting back to our previous discussion, just like no dealership is going to throw multiple wheel bearings at a vehicle and no OEM would tolerate a warranty claim where that was done, if one coil is bad, they aren't going to, nor is the OEM going to tolerate, throwing all of them at it. The first coil I had replaced on my Expedition, which was troubleshot by the dealer, as I didn't have a scanner that showed the correct mode data at that point, there was absolutely no mention of replacing any of the others. My dad's Lincoln and his Expedition, both of which have required a coil or coils to be replaced, again, single coils. It's ludicrous to think that if the others are still providing adequate energy to jump the gap that they should be replaced.

With older Ford vehicles, once you have the correct scan tool, it is very easy to observe individual misfire counts for each cylinder. On my Expedition they were all at zero except for the one that was breaking down under load and it was at like 500 or something. Not enough to trigger a CEL. On FCA products, WiTech would provide similar insight.

What do you think happens that mandates the replacement of all coils? I'm curious. Coil drivers aren't complex pieces of sensitive equipment.

 

[incognito_2u]

Nice Ride...... Best of Luck with your purchase.
By the way, PENNDOT wants their Speed Limit Sign back..../JK

 

[OVERKILL]

I agree it’s definitely not that simple on most of them.

Looks like the GM one is like $20.00:
https://www.gmpartsdirect.com/oem-parts/gm-start-button-84592245

Ford one is similar:
https://www.tascaparts.com/oem-parts/ford-start-button-dg9z10b776ab

Here's a video of a dude just swapping it for a nicer one on an F-150:

 

[AutoMechanic]

Right, but they also taught you to replace all the wheel bearings. I'd be questioning everything you've been taught at this point.

Getting back to our previous discussion, just like no dealership is going to throw multiple wheel bearings at a vehicle and no OEM would tolerate a warranty claim where that was done, if one coil is bad, they aren't going to, nor is the OEM going to tolerate, throwing all of them at it. The first coil I had replaced on my Expedition, which was troubleshot by the dealer, as I didn't have a scanner that showed the correct mode data at that point, there was absolutely no mention of replacing any of the others. My dad's Lincoln and his Expedition, both of which have required a coil or coils to be replaced, again, single coils. It's ludicrous to think that if the others are still providing adequate energy to jump the gap that they should be replaced.

With older Ford vehicles, once you have the correct scan tool, it is very easy to observe individual misfire counts for each cylinder. On my Expedition they were all at zero except for the one that was breaking down under load and it was at like 500 or something. Not enough to trigger a CEL. On FCA products, WiTech would provide similar insight.

What do you think happens that mandates the replacement of all coils? I'm curious. Coil drivers aren't complex pieces of sensitive equipment.

Because they are linked back to the computer and with the new one putting out more power it puts a lot of strain on the computer. I never had to replace any under warranty that I remember usually in Toyota they last forever though I’ve had to tell people why it’s important to replace all of them. And I read online on some reputable sources you should replace all for that reason.

 

[PimTac]

Because they are linked back to the computer and with the new one putting out more power it puts a lot of strain on the computer. I never had to replace any under warranty that I remember usually in Toyota they last forever though I’ve had to tell people why it’s important to replace all of them. And I read online on some reputable sources you should replace all for that reason.

Computers don’t experience strain like that.

 

[Delta]

Nice Ride...... Best of Luck with your purchase.
By the way, PENNDOT wants their Speed Limit Sign back..../JK

Heh, I plead the fifth on that one

 

[Quattro Pete]

No but you can’t replace it at home so it would have to be brought in for programming

So how did you get from "programming" to "wrecker"?

 

[AutoMechanic]

So how did you get from "programming" to "wrecker"?

Because it won’t work till programmed so it won’t start the car

 

[OVERKILL]

Because they are linked back to the computer and with the new one putting out more power it puts a lot of strain on the computer. I never had to replace any under warranty that I remember usually in Toyota they last forever though I’ve had to tell people why it’s important to replace all of them. And I read online on some reputable sources you should replace all for that reason.

The computer has drivers (coil drivers) for each coil, which provides the power necessary to energize them. The coil then gets triggered causing it to discharge and jump the gap on the plug. The operation of the coil driver doesn't change based on the age or condition of the coil, if the coil degrades, eventually it simply can't provide the necessary energy to jump the gap when triggered, this is typically exposed under load. Ergo, a weak coil isn't going to have any impact on the driver, but it will cause a misfire or misfires as it breaks down. Often heat can be a trigger to expose failure as can moisture.

 

[92saturnsl2]

Because they are linked back to the computer and with the new one putting out more power it puts a lot of strain on the computer. I never had to replace any under warranty that I remember usually in Toyota they last forever though I’ve had to tell people why it’s important to replace all of them. And I read online on some reputable sources you should replace all for that reason.

No they are not linked to the computer in a way that will put load on the computer (powertrain controller) itself. That's nonsense as is replacing multiple coils when only one is bad.

A new coil will not necessarily put out "more power" just because it's new. You seem to think coils wear like brake pads.

Replacing coils unnecessarily is for convenience only-- the possibility of not having to go back and replace another coil in 10k.... or 20k... or 100k... Or you could replace them all with new and have a new one fail at 10k... Which is why I don't replace good coils.

 

[Quattro Pete]

Because it won’t work till programmed so it won’t start the car

Any reputable shop should be able to do it.

Maybe I am not understanding your definition of "wrecker." I thought wrecker = junk yard = getting rid of the vehicle.

 

[OVERKILL]

Because it won’t work till programmed so it won’t start the car

I think it necessary to highlight that you seem to be using "wrecker" here in reference to a tow truck whereas I think most have been taking it as you mean sending the car to the wrecking yard.