44Outs ide tempe ratureA fall in temperature is indica tedimmediately and a rise in temp eratureafter a time delay .O n v ehicles with trip le inform ation display,the sym bol T is shown in the disp lay from3 °C as a warning for icy road surfaces.O n vehicles w ith g ra phic al informationdisplay 3 or c olour information displa y 3 amessage is shown in the display to warn foricy road surfaces. See figure.Check control 3Check Control monitors several fluid levels,the tyre pressure 3, the radio remotecontrol batteries, the anti-theft alarmsy stem 3 and important ex ternal lightinglamps, including the ca bles and fuses. Intra iler mode the trailer lighting is a lsomonitored.Once the ignition has been switched on, allcheck control functions are autom aticallyverified .Fault warnings appear on the display. Ifthere a re sev eral fault warnings, they aredisplay ed one after the other.Some of the fault warnings appea r on thedisplay in an abb reviated form.acknowledge fault displays as describedon p age 40.Fault warnings:Check remote controlba tteryIf battery volta ge of the remote control unitis too low – see page 55.Check b rake lig ht switc hFault. Brake lamp does not come on whenbrak e ap plied. Have cause of faultremedied imm ediately. We recom mendthat you consult a Vaux hall AuthorisedRepairer.Check safeguar dFault. Sy stem error in a nti-theft alarmsystem. Have cause of fault remediedimm ediately. We recomm end that y ouconsult a Vaux ha ll Authorised Repairer.Caution: The road surface may alreadybe icy even though the display indicatesa few degrees above 0 °C .