On-board computer event window 135 Compressed-air system, engine and cooling system On-board computer and displays Z Display messages Possible causes/consequences and M Solutions + Condensation in compressed-air reservoir There is too much condensation in the compressed-air braking system and/or the compressed-air dryer is malfunctioning. G WARNING If the condensation level in the compressed-air reservoir is too high or the condensed water freezes, the braking effect may be reduced. The compressed-air brake system can also fail com- pletely. There is a risk of an accident. X Draining the compressed-air brake system (Y page 304).
X If more than 4 cl of condensed water escapes or if the malfunc- tion occurs regularly: have the compressed-air braking system and compressed-air dryer checked at a qualified specialist workshop. : Transmission/ clutch reserve pressure too low The reservoir pressure in the transmission/clutch is too low. G WARNING The gears can no longer be changed properly. There is a risk of an accident. X Stop the vehicle as quickly as possible, paying attention to traf- fic conditions. X Apply the parking brake. X Let the engine run until the event window goes out and the res- ervoir pressure has reached an adequate level.
X If the malfunction occurs regularly, have the compressed-air system checked at a qualified specialist workshop. I Drive control faulty Supplementary text Û: Visit workshop. The electronic drive control is malfunctioning. X Observe the instructions in the event window.