Control Unit - Seat Toledo II (1M) - engine control unit IAW 4MV / 4LV

Fault in the IAW 4MV / 4LV engine control unit.

Various malfunctions may occur, including engine starting problems or rough engine running. Various fault codes are stored in the fault memory. Possible effects include faulty control of the ignition coils, an implausible signal from the throttle valve, and faults in the 5-volt circuit. Furthermore, the immobiliser may fail to release. The control of the lambda sensor heater may also be impaired or fail to function. In some cases, communication with the engine control unit is also impossible.

Please ring us in advance, to clarify whether any other components need to be sent in alongside the engine control unit.

Replacement unit for irreparable faults

If the engine control unit can no longer be repaired, we can, in most cases, supply a cost-effective second-hand part. The data can almost always be transferred from the original unit to the replacement unit, meaning that no programming is required on the vehicle.
Please enquire using the part number; we will check availability and the current price for you.