Hi Guys. Recently I bought a 2007 Mazda 3 sedan. And after few days AT light popped up and I thought it may be the transmission oil. However, I came across that my ECU is bad and I have to replace it. So I took my vehicle to a mechanic and he showed me where my ECU is bad and it's getting hot and he showed me that the ECU is already been bypassed. And he said that I have to replace my ECU. And in Sri Lanka, it would cost around LKR 100000 to 150000 ($500-$750). Because of that reason I was searching on the internet to buy a new ECU from Japan or from any other European country. So when I was checking through my ECU code which is 2797213541 I found only Mazda Demio ECU units. Now I am thinking that the previous owner changed the original ECU and put a reprogrammed Demio ECU.

- I need to know can we use Mazda Demio ECU on Mazda 3 or has it been replaced from the original ECU?
- Is there a place where I can buy the ECU and get it shipped to Sri Lanka?

 

Hello
Do you have any codes?
AT light usually TCM problems
You can get one on ebay but got be same port number or fix your original witch I think its cheaper.
Www.upfix.com