(Cars usually dated 2000 and up have security system).ĭo not tamper with or try to open the ECU yourself, as this voids the warranty. Note: Vehicles that have a Security System ( Immobilizer System ) will still need to be reprogrammed by a locksmith, dealer or licensed mechanic with programming tools. Start your vehicle to verify all the functions are working.Reconnect the electrical wires and the battery.Pull the old ECM out and replace it with the new one.Unbolt the screws holding the ECM in place (Tool: Socket Wrench).Locate the ECM either in the engine compartment or under one of the front seats in the vehicle.Disconnect battery from the car, wait 15 minutes before installing new ECM.All ground connections are in good condition and are tightly secured.Any known defective parts have been replaced.Wiring harness is clean and in good condition.These instructions are meant to be a generic guide to try fit most cars.īefore reconnecting the ECM make sure that: The ECU Installation is simple & takes about 30 minutes to complete. When the ECM goes bad, it can cause the car to run erratically, if at all. The ECM is responsible for receiving and transmitting signals to all the sensors in the vehicle. The ECM (electronic control module) in a car is the vehicle's brain. All our units are 100% tested, programmed with the latest software available to your vehicle, fully remanufactured & ready to plug and play!!!

Ecu car computer