On-board computer event window 137 Lighting system and electrical system On-board computer and displays Tyres Z Display messages Possible causes/consequences and M Solutions ª Generator is not charging battery. Supplementary text Û: Visit workshop. G Risk of accident The ª indicator lamp lights up yellow in the status area of the on-board computer as well as in the event window. The alternator is faulty or the poly-V-belt has torn. The vehicle's driving and brak- ing characteristics may change. X Stop the vehicle as quickly as possible, paying attention to traf- fic conditions. X Consult a qualified specialist workshop.
I Instrument cluster display and con‐ trols faulty G Risk of accident The CAN connection to the instrument cluster is interrupted. The display in the on-board computer can no longer show impor- tant information about the operating and road safety of the vehi- cle. X Stop the vehicle as quickly as possible, paying attention to traf- fic conditions. X Consult a qualified specialist workshop. 4s A short circuit in the lighting system has been detected. X Consult a qualified specialist workshop. Display messages Possible causes/consequences and M Solutions h Tyre pressure con‐ trol system restricted Supplementary text Û: Visit workshop. The tyre pressure control system is malfunctioning.
It is possible that the tyre pressure has decreased in one or more of the tyres. G WARNING The driving and braking characteristics are affected. There is a risk of an accident. X Stop the vehicle without steering or braking suddenly. Pay attention to the traffic conditions. X Check the tyres for damage. X Check the compressed-air line for leaks. X If necessary, change the tyre (Y page 323). X Have faults in the tyre pressure control system repaired at a qualified specialist workshop immediately.