Toyota
Dodge Durango
 Owners Manual
Maintaining your vehicle
Onboard diagnostic system (OBD II)

Your vehicle is equipped with a sophisticated onboard diagnostic system called OBD II. This system monitors the performance of the emissions, engine, and automatic transmission control systems. When these systems are operating properly, your vehicle will provide excellent performance and fuel economy, as well as engine emissions well within current government regulations.

If any of these systems require service, the OBD II system will turn on the "Malfunction Indicator Light (MIL)." It will also store diagnostic codes and other information to assist your service technician in making repairs. Although your vehicle will usually be drivable and not need towing, see your authorized dealer for service as soon as possible.

CAUTION!
  •  Prolonged driving with the MIL on could cause further damage to the emission control system. It could also affect fuel economy and driveability. The vehicle must be serviced before any emissions tests can be performed.
  •  If the MIL is flashing, while the engine is running, severe catalytic converter damage and power loss will soon occur. Immediate service is required.

Onboard Diagnostic System (OBD II) Cybersecurity

Your vehicle is required to have an Onboard Diagnostic system (OBD II) and a connection port to allow access to information related to the performance of your emissions controls. Authorized service technicians may need to access this information to assist with the diagnosis and service of your vehicle and emissions system.

WARNING!
  •  ONLY an authorized service technician should connect equipment to the OBD II connection port in order to diagnose or service your vehicle.
  •  If unauthorized equipment is connected to the OBD II connection port, such as a driver-behavior tracking device, it may:
  •  Be possible that vehicle systems, including safety related systems, could be impaired or a loss of vehicle control could occur that may result in an accident involving serious injury or death.
  •  Access, or allow others to access, information stored in your vehicle systems, including personal information.

For further information, refer to "Privacy Practices - If Equipped With Uconnect 8.4 Radio" and "Uconnect CyberSecurity" in "All About Uconnect Access" in your Owner's Manual Radio Supplement and "Cybersecurity" in "Understanding Your Instrument Panel".

    More about «Maintaining your vehicle»:

    Engine compartment - 3.6L

    Engine compartment - 5.7L

    Onboard diagnostic system (OBD II)

    Emissions inspection and maintenance programs

    Replacement parts

    Dealer service

    Maintenance procedures

    Fuses

    Vehicle storage

    Replacement bulbs

    Bulb replacement

    Fluid capacities

    Fluids, lubricants, and genuine parts

    Dodge Durango Owners Manual / Maintaining your vehicle / Onboard diagnostic system (OBD II)

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