Driving and operating 155The pitch of the audible warning willchange if a turn signal light on thetrailer or the towing vehicle fails.Trailer stability assistIf the system detects snakingmovements, engine power is reducedand the vehicle/trailer combination isselectively braked until the snakingceases. While the system is working,keep steering wheel as still aspossible.Trailer stability assist (TSA) is afunction of the Electronic StabilityProgram (ESP) 3 141.Auxiliary featuresPower take-offActivationTo activate the power take-off, withthe vehicle stationary and the engineidling:● Set the gearshift lever to neutral(vehicles with manualtransmission automated:selector lever in position N).● Depress the clutch pedal.● Press switch on the instrumentpanel; LED in switch illuminatesafter approx. 2 seconds.● Release the clutch pedal.The engine idle speed increases to1,200 rpm.CautionDuring operation of the powertake-off, never move the selectorlever out of neutral (vehicles withmanual transmission automated:selector lever in position N), toavoid damage to the transmission.If a gear change becomesnecessary, i.e. to adjust the drivingspeed, the power take-off mustalways be deactivated first.DeactivationTo deactivate the power take-off:● Depress the clutch pedal.● Press switch on the instrumentpanel; LED in switchextinguishes after approx.2 seconds.● Release the clutch pedal.
