Hi
I have a MY09 Liberty 2.5i manual sedan, 70,000kms. All is fine except recently I started to get a "toot" noise, a bit like a very quiet horn going off for a fraction of a second when I take off. Happens most of the time, sometimes not when cold.
I thought for a while it was the DMF squeaking but I discovered if you just leave the car in neutral and give the accelerator a small/brief tap, you can hear the toot/squeak. I recently had a service and my independent mechanic confirmed it was coming from the front passenger side, down near the firewall somewhere. He suggested a noisy ECU (I have no idea how a PCB can generate such noise).
I'd really like to get to the root cause, it's very annoying. Can anybody shed any light on this?
thanks