Good morning to everybody

I hope that this thread is not covered already somewhere else, but I am new to this forum and haven´t found a similar thread so far.
On Friday I drove my Jeep (2006 Liberty CRD) to the local garage to get some wheel spacer installed.
After a while the guy came to ask me if I had already recognized problems with the throttle?
I said no and than he told me that the mechanic just drove the jeep into a wall in the garage because the throttle was wide open and it was not possible to get the vehicle in neutral.
The second problem he told me or maybe the problem he said was that the ECU was so hot that the mechanic wasn´t even able to touch it.
By the way I bought the Liberty used from a Toyota Dealer, has the Toyota problem now comes to Jeep?
Thanks for your help
Best regards
Thomas