Replacing a S60 ECM unit

[eranga]

Hi,

Recently a fault came in my S60 ECM unit and I was asked to replace it. For that, I took the part number details of the current ECM unit and brought down a matching ECM unit from an online spare part dealer.

Then the Volvo mechanic said that they have to purchase ECM software from Volvo Sweden and upload it. Even though he tried to upload the software to the new ECM unit, it got rejected. The mechanic says the ECM unit is matching to my car. But he says that he's unable to install the software into the new ECM, because it looks like that particular ECM is a previously used one and software is already written to that.

Is there anybody in this forum, who has replaced an ECM unit of Volvo S60? This is a 2002/2003 model. Could anybody kindly answer below questions for me to understand what I can do to take my car back on feet?

1. Is it necessary to get a Brand New ECM to replace? Can a used ECM unit be fixed to a S60?

2. Does it necessary to upload the software to the S60?

3. Is there configuration to be done after installing the new ECM?

4. When changing an ECM, does it need to replace keys, key barrels and some other units in the car?

5. There are Brand new ECM units to purchase for US$ 2000 from the agent or US$ 1000 in Internet or used ones for US $120 in Internet. Will those used ones work, provided the device is in working condition? Is there anything special to do when replacing the ECM with a matching used ECM?

6. What should I look to find a matching ECM, if I try to source it from other than the Volvo agent to save cost?

Any help would be highly appreciated. Thank you in advance.

- Eranga