84 Instruments and controlsInterrupt your journey immediately.Remove key and check drive beltcondition and tensioning beforeseeking the assistance of aworkshop.Malfunction indicator lightZ illuminates or flashes yellow.Illuminates when the ignition isswitched on and extinguishes shortlyafter the engine starts. If it does notilluminate, seek the assistance of aworkshop.Can illuminate briefly when driving;this is normal and does not indicate asystem fault.Illuminates when the engine isrunningFault in the emission control system.The permitted emission limits may beexceeded. Fuel economy and vehicledriveability may be impaired. Seekthe assistance of a workshopimmediately.Control indicator Z also illuminates ifthere is a fault in the diesel particlefilter 3 126 or with the automatictransmission 3 130. Seek theassistance of a workshop as soon aspossible.Ensure the fuel filler cap is screwed incompletely 3 143.Flashes when the engine isrunningFault that could lead to catalyticconverter damage 3 127. Ease up onthe accelerator until the flashingstops. Seek the assistance of aworkshop immediately.Service vehicle soong illuminates yellow.Illuminates when the engine isrunning to indicate a fault in theengine or transmission electronics.The electronics switch to anemergency running programme, fuelconsumption may be increased andvehicle handling may be impaired.In some cases, the fault can beeliminated by switching the engine offand back on again. If g illuminatesagain after restarting the engine, thevehicle may need a service.Have the cause of the fault eliminatedby a workshop.Brake systemR illuminates red.Illuminates when the ignition isswitched on and extinguishes shortlyafter the engine starts. If it does notilluminate, stop and seek theassistance of a workshop.If it stays lit while the engine isrunning, the brakes do not operate asnormal, or leaks are found in thebrake system, do not attempt to drivethe vehicle. Have the vehicle towed toa workshop for inspection and repair.9 WarningStop. Do not continue yourjourney. Consult a workshop.
