Truck not starting sometimes - Toyota Nation Forum : Toyota Car and Truck Forums

Beau Kemp · 11-21-2006, 09:25 AM

I've always felt that it takes longer to start than it should. What I mean is when you turn the key, it has to crank longer to start than what feels "natural". I've noticed that when other people try to start it they usually have to try twice because they didn't hold the key long enough the first crank. Also, sometimes it won't start at all...it just cranks and cranks. Turn the key off and try again and it starts just fine. Anyone experience this on an '06? It only has 2700 miles. Doesn't matter if the weather is 100 or 32 it does the same thing. I took it to the dealership this morning, and they said they haven't seen an 06 do this, but they have seen some older models like an 04 have similar problems. We'll see what they find, and it should be under warranty, right?

***FRiZzO*** · 11-21-2006, 09:31 AM

Mine seems to take longer then normal ( whatever normal is) It does feel that it takes longer then it should. I saw another post on here in regards to this but I haven't heard of a fix.

boone · 11-21-2006, 09:43 AM

I've had it happen to me twice in 18 months on my '05.

I think it has something to do with the anti-theft sending unit. I not exactly sure of how it works but I believe the fuel is electronically controlled and doesn't send until the key transponder is detected. No fuel, no start.

You may want to see if they will give you a different key. As stupid as it might sound, after it didn't start for the second time, I swapped with my other black headed key. Hasn't happened since and it's been almost a year since the swap.

***FRiZzO*** · 11-21-2006, 09:47 AM

Quote:

Originally Posted by boone

I've had it happen to me twice in 18 months on my '05.

I think it has something to do with the anti-theft sending unit. I not exactly sure of how it works but I believe the fuel is electronically controlled and doesn't send until the key transponder is detected. No fuel, no start.

You may want to see if they will give you a different key. As stupid as it might sound, after it didn't start for the second time, I swapped with my other black headed key. Hasn't happened since and it's been almost a year since the swap.

I did have the no start at all happen twice also on my 05. But do you notice that it cranks longer then any other car before it starts? I'll count how many "RARARA" I hear before it starts when I go home for lunch in an hour.

Beau Kemp · 11-21-2006, 09:58 AM

Quote:

As stupid as it might sound, after it didn't start for the second time, I swapped with my other black headed key. Hasn't happened since and it's been almost a year since the swap.

That doesn't sound stupid at all. Thanks for the suggestion, perhaps I'll try a different key. Do the keys have a battery in them or something? Maybe it's dying and not sending a good signal. Now that I think about it, it seems to happen if I leave the keys in the ignition for a while. Like I'll go home for lunch and leave the keys in the ignition when I go inside for about 30 minutes.

I'm glad to hear that others think it takes too long to start, and that others have had the no starting issue. Sounds to me like it is probably part of the anti-theft, and nothing I should worry about. I just didn't want to find out later that it was indicative of a bigger problem.

***FRiZzO*** · 11-21-2006, 10:15 AM

Quote:

Originally Posted by Beau Kemp

That doesn't sound stupid at all. Thanks for the suggestion, perhaps I'll try a different key. Do the keys have a battery in them or something? Maybe it's dying and not sending a good signal. Now that I think about it, it seems to happen if I leave the keys in the ignition for a while. Like I'll go home for lunch and leave the keys in the ignition when I go inside for about 30 minutes.

I'm glad to hear that others think it takes too long to start, and that others have had the no starting issue. Sounds to me like it is probably part of the anti-theft, and nothing I should worry about. I just didn't want to find out later that it was indicative of a bigger problem.

No battery. just a chip that reflects a sin.

Here's a good read ....
http://pcworld.about.com/news/Feb142005id119661.htm

boone · 11-21-2006, 10:24 AM

Quote:

Originally Posted by Beau Kemp

That doesn't sound stupid at all. Thanks for the suggestion, perhaps I'll try a different key. Do the keys have a battery in them or something? Maybe it's dying and not sending a good signal. Now that I think about it, it seems to happen if I leave the keys in the ignition for a while. Like I'll go home for lunch and leave the keys in the ignition when I go inside for about 30 minutes.

No battery source in the key. Most likely it's a passive RFID tag.

Like the one's they have on products in department stores for anti-theft. Although ours have some sort of EEPROM which stores a code.

The truck's detection unit constantly sends out a electromagnetic field which powers the circuit inside the key and returns a code saying "hey it's me". RFID tags work similarly to credit cards, they can't wear out but the magnet can be affected by other unshielded electronic devices.

So either the magnetism on your current key has been compromised or you have a faulty detection unit in your truck. I'd try the key swap first.

I'm not sure that leaving the key in the ignition would have any adverse effects. Although I wouldn't recommend doing that anyway. Insurance companies don't tend to be sympathetic towards stolen vehicles when the keys were left inside.

Beau Kemp · 11-21-2006, 10:29 AM

Quote:

I'm not sure that leaving the key in the ignition would have any adverse effects. Although I wouldn't recommend doing that anyway. Insurance companies don't tend to be sympathetic towards stolen vehicles when the keys were left inside.

I forgot to mention that it is inside the garage (with the door down) when I leave the keys in

dl1027 · 11-21-2006, 01:41 PM

Yeah I agree. They do take too long to start. Took me a while to get used to that. My old Grand Prix would start after three revolutions when cold and one revolution when warm. This V6 Taco seems to take at least 5 revolutions no matter what. I don't like having to hold the starter on till it starts because I can hear the ring gear grinding.

rpmspeedyBlue · 11-22-2006, 01:28 AM

Wasn't there a thread about this and it was a tsb- fuel pump problem. I not sure if it was on a differnt site.

TSmith274 · 11-22-2006, 01:44 AM

I've noticed the same thing. After years driving a Chevy Tahoe that started in about 1/2 second, it was an adjustment. A friend's 2000 Tacoma does the same thing. He just had to replace his starter... probably from years of extra revolutions. It is an odd thing with these Tacomas, but something I'm getting used to. Hopefully future models won't have this trait. Seems to me that it would be fairly easy to engineer away. Good topic... I've wondered about this as well.

gothicreaper220 · 11-22-2006, 03:51 AM

I have noticed an extended starting time. One of the things im looking at doing is finding a way to do a touchkey start.

Basically the touchkey start works as you only have to turn the key forward for about a 1/4 of a second or just long enough to complete the circuit. Once that happens it keeps cranking the engine for about 5 seconds or until it starts.

Id love to see a way of implementing that. I'm working on that along with my subwoofer box (which has been put on hold due to my truck being in a high end body shop getting some work done).

Tom B · 11-22-2006, 04:13 AM

I have the exact same no start problem with my2005. The dealer will not fix it because they can't duplicate the problem. It is not the same as the TSB......The TSB indicates will not start in sub freezing weather. It is not the key. Mine will do it with any of my keys.

The longer crank period is to let the oil pressure build up before it starts.

russ25nys · 11-22-2006, 04:26 AM

Quote:

Originally Posted by rpmspeedyBlue

Wasn't there a thread about this and it was a tsb- fuel pump problem. I not sure if it was on a differnt site.

I believe their was a TSB for this. I took mine in for it and they said they replace my fuel pump but I never wen't back.

yrffej · 11-22-2006, 06:38 AM

Quote:

Originally Posted by Beau Kemp

I've always felt that it takes longer to start than it should. What I mean is when you turn the key, it has to crank longer to start than what feels "natural". I've noticed that when other people try to start it they usually have to try twice because they didn't hold the key long enough the first crank. Also, sometimes it won't start at all...it just cranks and cranks. Turn the key off and try again and it starts just fine. Anyone experience this on an '06? It only has 2700 miles. Doesn't matter if the weather is 100 or 32 it does the same thing. I took it to the dealership this morning, and they said they haven't seen an 06 do this, but they have seen some older models like an 04 have similar problems. We'll see what they find, and it should be under warranty, right?

yeah... it's been mentioned before. it's happened to me twice when the truck was newer, year and a half later no problem.... weather it's the aiti theft transponder? or just fuel delivery no one knows... seems to happen to you frequiently enough though... try inserting the key and click to the first detent, before cranking to start for a few seconds... (allowing for fuel delivery, then start) see if you can notice a difference?