Thanks for the reply, no I haven't got a service key, the sensor kept cutting out on the sensor bar about 2/3 off the way up the bar, so i replaced the sensor thinking it was that but it still has a fault although error 4.185 hasn't come up since i replaced this sensor so i was thinking this is why i need to calibrate the lift on the truck. Will i need to service key to calibrate the truck? Or can i carry this out on the dashboard buttons?
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