2001, 2002, 2003, 2004 and some 2005 Toyota Rav4 ECM (ECU).
The automatic 01-05 Toyota Rav4 models, either 4WD or 2WD, are commonly having issues with the transmission, with symptoms that may suggest a bad transmission. The good news is that in 99% of the cases, the problem will be fixed for good by just CORRECTLY repairing or replacing the ECM (Engine Control Module). This module controls the engine and the automatic transmission of your vehicle.
The following are the most common symptoms, but there are more symptoms not listed here:
-Hesitation or harsh shifting, specially in 3rd gear
-Harsh engagement in reverse, often slamming into the gear
-Sometimes it feels like it is braking by itself
-Rattling, clicking or weird noise coming form the front of the vehicle when engine is on
-One day it magically works ok and the other day, all the issues are back
-Issues show up only when cold or only when hot
-When stopping in a red traffic light and start moving again, it feels very heavy or sluggish
-Check engine or trouble codes are not present in most cases
-If check engine is present, it gives P0750, P0753, P0755, P0758 or P1760 codes
2 year warranty