Hyundai Grand i10 AT ECM burnt: Should I repair or replace?

When I asked my local mechanic he told me that we can replace only the burnt parts and it will cost around 14K

BHPian vennarbank recently shared this with other enthusiasts.

In my wife's Grand i10 automatic, check light came on. Hyundai ASS told that ECM is burnt in some places and we need to change it costing around 40K. But when I asked my local mechanic he told me that we can replace only the burnt parts and it will cost around 14K. Has anyone done these kind of repairs before.

Here's what BHPian Jeroen had to add to this matter:

You need to understand what happened here first. Why did it burn? Is it an electronic component that popped? If so, you need to figure out why. Sometimes old electronics do go up in smoke. But it is very rare for car electronics up to say 10-15 year to have such damage.

If it does it usually means there was another reason why the ECU got damaged. Something must have shortened.

If it is straighftorward components replaced that can usually be done. I’m not familiar with this car, but you might want to check if the ECU needs re-programming or so. In many cases it is just a plug and play principle.

Good luck

Jeroen

Meanwhile, here is BHPian sagarpadaki's reply:

A competent ECU repair person will be able to replace the damaged components and repair the ECU. You will need to put some effort to figure out who can do this repair in your city.

Here's what BHPian Ravindra M had to add to this post:

The burnt components are passive components like resistor, diode etc. It is tell-tale sign of something wrong on the vehicle side - maybe short circuit somewhere or failed electronic component/actuator causing electrical overload or spikes from alternator, battery getting disconnected even for microseconds. This need to be investigated thoroughly by competent technician. Else the new/refurbished ECU is likely to fail again in sometime.

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