Black plate (23,1)Cadillac CTS/CTS-V Owner Manual (Include Mex) - 2012Instruments and Controls 5-23See your dealer for assistance inverifying proper operation of themalfunction indicator lamp.. The OBD II (On-BoardDiagnostics) system determinesthat critical emission controlsystems have not beencompletely diagnosed. Thevehicle would be considered notready for inspection. This canhappen if the 12-volt battery hasrecently been replaced or rundown. The diagnostic system isdesigned to evaluate criticalemission control systems duringnormal driving. This can takeseveral days of routine driving.If this has been done and thevehicle still does not pass theinspection for lack of OBD IIsystem readiness, your dealercan prepare the vehicle forinspection.Brake System WarningLightThe vehicle brake system consistsof two hydraulic circuits. If onecircuit is not working, the remainingcircuit can still work to stop thevehicle. For normal brakingperformance, both circuits need tobe workingIf the warning light comes on, thereis a brake problem. Have the brakesystem inspected right away.Metric EnglishThis light should come on brieflywhen the ignition is placed inON/RUN. If it does not come onthen, have it fixed so it will be readyto warn if there is a problem.When the ignition is on, the brakesystem warning light also comes onwhen the parking brake is set.The light flashes or stays on if theparking brake is not fully released.If the light stays on after the parkingbrake is fully released, there is abase brake problem.{ CAUTIONThe brake system might not beworking properly if the brakesystem warning light is on.Driving with the brake systemwarning light on can lead to acrash. If the light is still on afterthe vehicle has been pulled offthe road and carefully stopped,have the vehicle towed forservice.
