Finally a modern hatch: Hyundai i10 Sportz AT

BulZire · 3rd May 2011, 13:43

Best Wishes Samurai, I Was attached to this thread from the beginning and closely watching all the posts to find the problem in your car. Got a chance to learn something here. Wish you do not have any more hassle in it.

DRIV3R · 3rd May 2011, 14:23

May be a pressure wash during the 1st service affected the ECM?

Anyways, good to know that the problem is traced!

Auto_Fan · 3rd May 2011, 15:31

That's a great news!

How ECM's fault made it to the transmission not working properly? Did Hyundai talk anything about this?

Samurai · 3rd May 2011, 16:06

Quote:

Originally Posted by anekho

Good to know the problem has been identified. Just curious, how exactly was the faulty ECM causing that jerk (from the transmission)?

Quote:

Originally Posted by Auto_Fan

How ECM's fault made it to the transmission not working properly? Did Hyundai talk anything about this?

Well, I didn't have to ask them. ECM is the brain of any car these days. They control everything. If that unit goes out of whack, it will send wrong signals to the car's control system.

An automobile drive-train is a big control system, the driver is part of that system. Earlier, the cars had mechanical control systems, now they are computer controlled for higher degree of control.

Read more about ECM: Engine control unit - Wikipedia, the free encyclopedia

Even the AT is controlled by something called TCU, which is often part of the ECU: http://en.wikipedia.org/wiki/Transmission_control_unit

The strange behavior of the car lead all the experts who worked on this car to suspect the ECM from the beginning. Mechanical problem won't be so strange. Finally, they turned to be right in their suspicion.

Furebo · 3rd May 2011, 16:16

Glad to know that the culprit was found and your car is being repaired.

Quote:

Originally Posted by Samurai

If that unit goes out of whack, it will send wrong signals to the car's control system.

Don't you think that you are lucky that you did not meet with an accident because of this?

figo_united · 3rd May 2011, 16:30

Glad to know that the problem has been found.

I've had my share of problem with the key programming/immobilizer, read details here.
When the ECU needs to be replaced, the keys will be reprogrammed to the new code that the new ECU expects. No change in the lock assembly is needed. Essentially, all the keys are the same, just the programming differs.

Even If the problem is fixed, I would still make an effort to check with them as to what was the exact problem with the ECU, and what probably might have caused it. I'm just not satisfied with 'replace it and it works' solutions. More so since it is just a 2 month old car, it deserves a minimum level of RCA.

Samurai · 3rd May 2011, 16:31

Quote:

Originally Posted by Furebo

Don't you think that you are lucky that you did not meet with an accident because of this?

There is a reason why driver is part of the control system, driver can compensate in most cases if things go wrong. And no, I don't think the problem I had would have caused an accident.

One more thing. In the two months of driving, I had noticed one thing. When I brake suddenly, I used to have distinct feeling that the car was fighting me back, the feeling one gets while toe-heeling. It used to stop half a second later than I wished. I have mentioned it here. I had attributed it to spongy brakes at first, later I wasn't so sure.

Vid6639 · 3rd May 2011, 16:40

Why would the ECM fail after the service? That's the interesting question.

Can anyone confirm where the ECU is located in the i10. Also if the AT has a separate TCU where is that located or is the TCU a part of the ECU hence different for the AT.

It could be possible that the pressure wash has messed up the ECU/TCU.

JishD · 3rd May 2011, 17:48

Quote:

Originally Posted by Samurai

One more thing. In the two months of driving, I had noticed one thing. When I brake suddenly, I used to have distinct feeling that the car was fighting me back, the feeling one gets while toe-heeling. It used to stop half a second later than I wished. I have mentioned it here. I had attributed it to spongy brakes at first, later I wasn't so sure.

That can safely be attributed to the tyres. I just upgraded to 175/70 R13 A-drives and now the braking is much much improved !

Samurai · 3rd May 2011, 17:52

Quote:

Originally Posted by JishD

That can safely be attributed to the tyres. I just upgraded to 175/70 R13 A-drives and now the braking is much much improved !

I have 175/70 R13 Bridgestone Turanza ER-60 from day one. No, it is not the tyres. Tyre doesn't fight back with toe-heeling kind of feeling.

amitoj · 3rd May 2011, 19:00

Glad that the problem was found and is being corrected!
I will need to keep a close watch on my wife's i10 AT now for any signs of trouble.

SPIKE ARRESTOR · 3rd May 2011, 19:42

What make is the ECU / ECM? Also, if the ECM gets corrupted won't the Diagnostic tool detect it?

Spike

sbiswas · 3rd May 2011, 20:02

Samurai, glad to hear that the problem is identified. Thank you for keeping us posted with details. I wish you many miles of happy driving again.

SS-Traveller · 3rd May 2011, 21:02

Quote:

Originally Posted by Samurai

The strange behavior of the car lead all the experts who worked on this car to suspect the ECM from the beginning.

What experts?

Quote:

Originally Posted by SS-Traveller

Water in the AT ECM during pressure washing caused a short circuit? Where is that ECM located?

At this rate Hyundai will go the mobile phones way, installing a detector in their ECMs to tell if water contamination has occurred - and if the detector changes colour, you as the customer need to pay for the ECM because you took the car swimming in the sea!

Quote:

Originally Posted by SPIKE ARRESTOR

What make is the ECU / ECM? Also, if the ECM gets corrupted won't the Diagnostic tool detect it?

Indeed, it ought to.

Samurai · 3rd May 2011, 23:08

Quote:

Originally Posted by SS-Traveller

What experts?

My car was serviced at Autoland, and they didn't have people too familiar with AT. Therefore, they got an AT specialist from Advaith Mangalore, which is 60kms away. He came, spent whole day and found nothing. Next day he drove the car to Mangalore. Since he suspected ECM, he ordered the spare kit from Bangalore for testing it. I figured he must be an expert since he methodically went about it and identified the problem.

Quote:

Originally Posted by SPIKE ARRESTOR

What make is the ECU / ECM? Also, if the ECM gets corrupted won't the Diagnostic tool detect it?

I hope you are not expecting me to answer that.

3rd May 2011, 13:43	#151
BulZire BHPian Join Date: Nov 2010 Location: BLR[KA]/DPM[TN] Posts: 398 Thanked: 233 Times	re: Finally a modern hatch: Hyundai i10 Sportz AT Best Wishes Samurai, I Was attached to this thread from the beginning and closely watching all the posts to find the problem in your car. Got a chance to learn something here. Wish you do not have any more hassle in it.
	() Thanks

3rd May 2011, 14:23	#152
DRIV3R Senior - BHPian Join Date: Nov 2009 Location: India Posts: 1,905 Thanked: 2,254 Times	re: Finally a modern hatch: Hyundai i10 Sportz AT May be a pressure wash during the 1st service affected the ECM? Anyways, good to know that the problem is traced!
	() Thanks

3rd May 2011, 15:31	#153
Auto_Fan BHPian Join Date: Sep 2010 Location: Pune Posts: 45 Thanked: 4 Times	re: Finally a modern hatch: Hyundai i10 Sportz AT That's a great news! How ECM's fault made it to the transmission not working properly? Did Hyundai talk anything about this?
	() Thanks

3rd May 2011, 16:30	#156
figo_united BHPian Join Date: Jan 2011 Location: Bangalore/Mysore Posts: 395 Thanked: 72 Times	re: Finally a modern hatch: Hyundai i10 Sportz AT Glad to know that the problem has been found. I've had my share of problem with the key programming/immobilizer, read details here. When the ECU needs to be replaced, the keys will be reprogrammed to the new code that the new ECU expects. No change in the lock assembly is needed. Essentially, all the keys are the same, just the programming differs. Even If the problem is fixed, I would still make an effort to check with them as to what was the exact problem with the ECU, and what probably might have caused it. I'm just not satisfied with 'replace it and it works' solutions. More so since it is just a 2 month old car, it deserves a minimum level of RCA.
	() Thanks

3rd May 2011, 16:40	#158
Vid6639 Team-BHP Support Join Date: Jul 2006 Location: Bangalore Posts: 17,730 Thanked: 43,471 Times View My Garage	re: Finally a modern hatch: Hyundai i10 Sportz AT Why would the ECM fail after the service? That's the interesting question. Can anyone confirm where the ECU is located in the i10. Also if the AT has a separate TCU where is that located or is the TCU a part of the ECU hence different for the AT. It could be possible that the pressure wash has messed up the ECU/TCU.
	() Thanks

3rd May 2011, 19:00	#161
amitoj Senior - BHPian Join Date: Nov 2004 Location: Windham, NH USA Posts: 3,348 Thanked: 3,105 Times View My Garage	re: Finally a modern hatch: Hyundai i10 Sportz AT Glad that the problem was found and is being corrected! I will need to keep a close watch on my wife's i10 AT now for any signs of trouble.
	() Thanks

3rd May 2011, 19:42	#162
SPIKE ARRESTOR Senior - BHPian Join Date: Nov 2009 Location: Germany Posts: 2,854 Thanked: 1,532 Times	re: Finally a modern hatch: Hyundai i10 Sportz AT What make is the ECU / ECM? Also, if the ECM gets corrupted won't the Diagnostic tool detect it? Spike
	() Thanks

3rd May 2011, 20:02	#163
sbiswas BHPian Join Date: Aug 2009 Location: Kolkata Posts: 142 Thanked: 58 Times View My Garage	re: Finally a modern hatch: Hyundai i10 Sportz AT Samurai, glad to hear that the problem is identified. Thank you for keeping us posted with details. I wish you many miles of happy driving again.
	() Thanks