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jfmtnbiker

Check Engine Light And New Computer

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I have same issue with check engine light and rough shifting - at 34200 miles on my 06 corolla S check engine light came on and tramsmission started shifting hard - dealer told me they will keep the car while they wait for an new ECM - thie gave me a loaner( 2007 corolla for free) said it would be 2 or 3 weeks at least before ECM was in - they did mention that its actually coverd under the 8year/80000 emission warrantly - not sure why

Is that a common problem for the newer Corollas??

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Guest SparkleMotion
Might mean that a large batch of the ECU computers were bad and are failing all over the place.

 

Your warranty should provide some rental coverage if dealer feels the transmission may be damaged by continuing to drive with malfunctioning shift points.

 

You are absolutely correct. My 2006 Corolla "died" on Monday. At first it would not start, but when it did, it sounded like a lawnmower. It had an intermittent idle and seemed like it had no gas. The check engine light was on and the gas pedal had no or little effect. The engine eventually stopped turning over all together. The radio and all the inside lights would come on, but no engine. When I drove to work that morning, the car was absolutely fine. It was serviced less than one month before for an oil change.

 

So my car, that only has 16,000 miles on it, was towed to my dealership on Tuesday. On Wednesday, I was told that the ECU computer was malfunctioning and that the ETA was September 16 for the new computer. He said it was something that was happening all over the country and the computers were on backorder.

 

I was given a loaner--free of charge. I just asked how I was going to be compensated for them having my car for three weeks. Everyone was extremely polite about it and I am looking forward to getting my car back.

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I realize this is a older post, but someone refreshed it to the top.

 

I you find it unacceptable for your car to be down that long, check your state lemon laws. Most, if not all states have a clause that if your car is at the dealer for over a month, you can get a full buy back. Just a FYI if anyone is interested.

 

Toyota seems to be having the problems that VW did with ECUs. It sucks that it's a distributer problem, but that ECU problem is one of the main reasons VWs have a reputation for being crap now days. They had random starting problems. Drivers had to prey to the car gods that your they could start that day. I really hope Toyota can get this problem under control, work out the problems with their ECU suppliers and not let things get out of hand.

 

Anyone know what the failure rates are? Toyota really seems to be changing overnight. Not in a good way either.

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I have same issue with check engine light and rough shifting - at 34200 miles on my 06 corolla S check engine light came on and tramsmission started shifting hard - dealer told me they will keep the car while they wait for an new ECM - thie gave me a loaner( 2007 corolla for free) said it would be 2 or 3 weeks at least before ECM was in - they did mention that its actually coverd under the 8year/80000 emission warrantly - not sure why

Sounds like it is more common than just your car. Maybe the original computer has an inherent defect and should be replaced in all 2006?

It is probably cheaper for Toyota to only take care of the ones that go bad. Good thing it is covered under your warranty.

Might be one of the bugs that still has to be worked out - doesn't mean that Corolla is still not extremely reliable.

Don't get dissillusioned, just because of one component failure. On the whole Corollas are far better in terms of reliability and dependability.

Enjoy the loaner and keep posting when you have a problem or question with your car.

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My wife currently owns a 2006 Toyota Corolla LE. This past week we were on our way to the shopping mall and suddenly the check engine light came on while driving down a hill. My first instinct was to take it to the dealer immediately...so that's what I did!

 

After leaving my vehicle at the dealer for a day, they determined that the computer is bad. The car has nearly 33,000 miles on it. They informed me that Toyota has an updated computer. Obviously, this is still a warranty issue.

 

I noticed in one of the previous forums that someone else experienced a similar issue. I am not really sure of the technical term for this computer, but I am told that the cost is approximately $600.00. The funny thing is that we just took this car on a long trip and it was fine. In fact, it gave us 38 mpg the entire trip!

I'm surprised I didn't read this message earlier. I guess I just didn't think I needed to read the "recall" section. My computer (and car) died a couple of weeks ago when starting it. It turned out to be the computer as well and the mileage was similar...equal to about 36,000 miles. I had it towed and an hour later was out of the local dealer with a new one and at no charge. They actually had one in stock, which makes me think they need to keep some on hand for some reason.

Edited by muzak

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My wife currently owns a 2006 Toyota Corolla LE. This past week we were on our way to the shopping mall and suddenly the check engine light came on while driving down a hill. My first instinct was to take it to the dealer immediately...so that's what I did!

 

After leaving my vehicle at the dealer for a day, they determined that the computer is bad. The car has nearly 33,000 miles on it. They informed me that Toyota has an updated computer. Obviously, this is still a warranty issue.

 

I noticed in one of the previous forums that someone else experienced a similar issue. I am not really sure of the technical term for this computer, but I am told that the cost is approximately $600.00. The funny thing is that we just took this car on a long trip and it was fine. In fact, it gave us 38 mpg the entire trip!

I'm surprised I didn't read this message earlier. I guess I just didn't think I needed to read the "recall" section. My computer (and car) died a couple of weeks ago when starting it. It turned out to be the computer as well and the mileage was similar...equal to about 36,000 miles. I had it towed and an hour later was out of the local dealer with a new one and at no charge. They actually had one in stock, which makes me think they need to keep some on hand for some reason.

Good thing they had one in stock.

They should keep at least one on hand all the time, especially if this is a common problem.

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My ECU just died... 2005 Corrola CE manual tranny

 

64000 kms, 3 1/2 years old. So no longer guranteed.

 

Fortunatelly.... it died at the dearler, it was in for regular maintenance. I get one voicemail that my car is ready and 5 minutes later a call saying it won't start and the engine computer died.

 

Dealer will change, no questions asked, got a loaner and they asked, "Do you mind if we lend you a 1999, it's an older car"

 

Where is the ECU located? When I went to pick-up the loaner, I noticed the glovebox off.

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Sorry to hear that - glad to hear that the dealership will replace the ECU. I've heard that they are covered under the powertrain warranty (5 years / 60K miles), atleast here in the US.

 

As for the location, the ECU is almost even with the bottom of the glove box. If you look underneath - you should just see the silver, brick-like ECM sticking out. Can't miss it, as it is a pretty good size box. It will have a trim panel covering up the front half of the ECU - but you should notice the back half.

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Thanks for the quick response Fish!

 

Is there anyway that the ECU can be damaged by changing the cabin filter myself? I did change the filter not too long ago and removed the glove box to do so

 

I'm feeling a bid paranoid!!

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Nope. You can bang on the ECM and even try and shock the thing with static - won't hurt it. The delicate bits are protected by the ECU's shielded case. Just one of those things on some of the later 9th gen Corollas. One second it is find, the next second the car doesn't want to start. Most happen very early on - so warranty replacement happens on almost all cases that I've seen.

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Although they are pretty tough units - vibration and power issues are still the top culprits for failing ECMs - though with the Toyota ECMs, I'm thinking a discrete component issue, i.e. manufacturing defect. Only seems to affect 2005+ Corollas and a small percentage of them. At least all the one's that I've heard go bad have been replaced under warranty.

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Although they are pretty tough units - vibration and power issues are still the top culprits for failing ECMs - though with the Toyota ECMs, I'm thinking a discrete component issue, i.e. manufacturing defect. Only seems to affect 2005+ Corollas and a small percentage of them. At least all the one's that I've heard go bad have been replaced under warranty.

I think with all the failures, that it is a component or design defect.

The fact that most fail while still under warranty leads me to believe that it is more than planned obsolescence failure.

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Guest dmpaq20

I am considering purchasing this car used (2006 Corolla S) with 74K miles. But I am concerned about this ECU issue. How prevalent is it?

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Usually hit or miss. There is a TSB with affect ECM serial numbers - but there are probably a number of cases where the ECM failed was not noted in the TSB. Generally, they happen early on - usually after a couple of years, less than 60K miles. But like they say - YMMV. Seemed to affect most 2005-2006 Corollas, some 2007-2008 also had ECM issues. If the price is right and the car looks good - there is no reason not to buyit , regardless of a potential ECM issue that may or maynot affect the car - as the total number of affected cars is relatively small. If you are concerned, make it part of your negotiation with the dealership - have them put in writing that they will provide a replacement ECM in the event of a ECM failure. Some extended warranties will cover the ECM, but not all - so carefully read the fine print.

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