When the electronic control unit of the engine finds failure, the electronic control unit of the engine does diagnostics and remembers a mistake. Besides, the lamp of the check engine alarm system in a combination of devices lights up or blinks for informing the driver.

The engine electronic control unit will also store diagnostic codes (DTC) of failures. Access to diagnostic codes can be got by means of a figurative tester.

NOTE Time necessary to clear memory of the control unit of diagnostic codes (DTC) by shutdown of the rechargeable battery, was increased with 10 with (on the previous models) up to 1 min.