Error codes found in Brake 01 and engine ecu are "coding incorrect" in both of these modules, customer just bought the vehicle and the lights turned on on the way home from buying the car. I was able to code the Brake 01 module and the fault code cleared but when trying to code the engine ecu it came up with security access password is incorrect, there was nowhere for me to enter a password or retrieve a password, when I select "online security" I get "security 1" to "5" but all I get when I select it is "online ok" or something like that. How do I get pass the security so I can code the ecu? This vehicle has an accident history and have a feeling someone messed around with the coding after the event. Car does NOT have any current crash data errors!

Can anyone help with this?