Factory Remote Start Inquiry

[garyv]

Hello All! New Here and have a question I have a 2015 4runner limited with dealer installed remote start which works fine except when I go to enter vehicle the engine shuts off (with the key fob in hand) and I have to manually start it again after I hop in to drive away.

Im curious to know if this is normal operation, because I find it pretty annoying as I feel it should just stay running when I enter the truck.

haven't gone to dealership to check out this issue (hour drive from home). so I thought id try to find some insight here. have searched the forum and haven't found any related topics.

any info would be greatly appreciated. thanks

Gary.

 

[cbielat]

Hello All! New Here and have a question I have a 2015 4runner limited with dealer installed remote start which works fine except when I go to enter vehicle the engine shuts off (with the key fob in hand) and I have to manually start it again after I hop in to drive away.

Im curious to know if this is normal operation, because I find it pretty annoying as I feel it should just stay running when I enter the truck.

haven't gone to dealership to check out this issue (hour drive from home). so I thought id try to find some insight here. have searched the forum and haven't found any related topics.

any info would be greatly appreciated. thanks

Gary.

It's a safety issue. All smart keys do this.

 

[MudPie]

It's a safety issue. All Toyota and Lexus smart keys do this.

ftfy

 

[NoDak]

actually its inherent to Toyota/Lexus ECU and aftermarket remote starts

most aftermarket remotes will do the same thing since its a security issue within the ecu and how it generates a new code between the fob and ecu everytime you grab the handle/unlock the vehicle.

some takeover modules will get around it, but its a funky hack that literally unlocks the vehicle, remote starts it, then locks it so the ECU thinks the vehicle is unlocked.

 

[cbielat]

ftfy

What?

 

[BlackWorksInc]

actually its inherent to Toyota/Lexus ECU and aftermarket remote starts

most aftermarket remotes will do the same thing since its a security issue within the ecu and how it generates a new code between the fob and ecu everytime you grab the handle/unlock the vehicle.

some takeover modules will get around it, but its a funky hack that literally unlocks the vehicle, remote starts it, then locks it so the ECU thinks the vehicle is unlocked.

I assumed it was a security feature, saw a Nissan Maxima do the same thing while demonstrating the remote start. You can get into the vehicle, but when you go to shift it into gear it turns off.

Figured it's so someone can't just hop in the vehicle while it's idling and take off.

 

[MudPie]

What?

ftfy = fixed that for you

 

[m85476585]

I assumed it was a security feature, saw a Nissan Maxima do the same thing while demonstrating the remote start. You can get into the vehicle, but when you go to shift it into gear it turns off.

Figured it's so someone can't just hop in the vehicle while it's idling and take off.

Also so you can't accidentally drive away without your keys.

With the "smart" key they could theoretically keep it from shutting off if they wanted to if the key is present, but it's not that smart.

 

[cbielat]

ftfy = fixed that for you

Oh, I see what you did there. Really only pertains to Toyota/Lexus.

 

[BlackWorksInc]

Also so you can't accidentally drive away without your keys.

With the "smart" key they could theoretically keep it from shutting off if they wanted to if the key is present, but it's not that smart.

I don't know how many manufacturers do this, but it seems Toyota's system won't ping the keyfob once it has verified the keycode and started until either the power switch is pressed and/or the door is opened. It's a bit funny because a friend threw his Prius keys in a bush after turning the vehicle on and drove around without a key fine until he opened the door. I would imagine this is mainly done for battery life in the fob as pinging it constantly will kill the battery. The obvious solution would be a either a wireless charging pad and/or dock and a recharchable keyfob. The two main issues with that is early smart key systems did have "docks" for the key, but thet were removed later on I imagine because customer's didn't want to have to insert the keyfob like a regular key all the time vs. Keeping it in your pocket. The second reason being that it would make the keyfob ridiculously expensive, current keys are already around $250~300 per keyfob.

 

[m85476585]

I've driven a Mazda with a smart key, and it will keep running if you throw the key out of the car. Eventually there will be a message on the screen complaining about it if you do that. I'm sure they program them that way so that it doesn't shut off while you are driving if it loses a signal.

If they car has been started with remote start, they could program it to check the key when you open the door, and leave the car running if it's there. They would have to change some programming, but it seems easy to do. Maybe they are worried about the car somehow moving while you are getting in.

Random question: do smart key cars still have a steering wheel lock? What happens if that gets stuck? In mine if the wheel is pushing against the lock, the key won't turn until I turn the wheel slightly to un-jam the lock. Have they come up with a better mechanism in smart key cars?

 

[313n703]

I didn't think I had remote start on my 2010 LE, but I just saw this under the hood. When try to do start sequence on the remote, nothing happens. I press lock twice and hold the third time.

 

[gm350reratliff]

It's a safety issue. All smart keys do this.

Not all but mostly asian vehicles.

actually its inherent to Toyota/Lexus ECU and aftermarket remote starts

most aftermarket remotes will do the same thing since its a security issue within the ecu and how it generates a new code between the fob and ecu everytime you grab the handle/unlock the vehicle.

some takeover modules will get around it, but its a funky hack that literally unlocks the vehicle, remote starts it, then locks it so the ECU thinks the vehicle is unlocked.

Oh, I see what you did there. Really only pertains to Toyota/Lexus.

No, Honda OEM remote starts do this as well, for both regular key and smart key vehicles. Same goes for OEM toyota remote starters. Regular key or smart key it will shut down when entering the vehicle. I don't know why but it really bugs me when they do that so I run aftermarket remote starters on both of mine.

My previous GM and Ford vehicles with OEM remote starters did not shut down when entering but they had short run times and crappy range, just like every other OEM remote start.

 

[Superjet]

I didn't think I had remote start on my 2010 LE, but I just saw this under the hood. When try to do start sequence on the remote, nothing happens. I press lock twice and hold the third time.


View attachment 182934

Is there a antenna mounted on the windshield?

 

[313n703]

Is there a antenna mounted on the windshield?

Turns out the P.O. installed an aftermarket remote starter by Audiovox. The only documentation I found in the glove box says to press the correct button sequence, but I doesn't say which the buttons to use and in which sequence. :redbrick: Doing some research on which model it is so I can find a manual.

 

[gm350reratliff]

Turns out the P.O. installed an aftermarket remote starter by Audiovox. The only documentation I found in the glove box says to press the correct button sequence, but I doesn't say which the buttons to use and in which sequence. :redbrick: Doing some research on which model it is so I can find a manual.

Try lock x3 or lock, unlock, lock.

 

[313n703]

Try lock x3 or lock, unlock, lock.

OMG! You're a genius, the latter button combo worked! Thanks!

 

[gm350reratliff]

I remember installing some of those systems many years ago. It was the same button combo back then as well.