Hyundai Tucson: Jump starting

Hyundai Tucson - Fourth generation (NX4) - (2020-2023) - Owner's Manual / Emergency situations / Jump starting

Jump starting can be dangerous if done incorrectly. Follow the jump starting procedure in this section to avoid serious injury or damage to your vehicle. If in doubt about how to properly jump start your vehicle, we strongly recommend that you have a service technician or towing service do it for you.


To prevent SERIOUS INJURY or DEATH to you or bystanders, always follow these precautions when working near or handling the battery:

instructions carefully whenAlways read and follow instructions carefully when handling a battery.

designedWear eye protection designed to protect the eyes from acid splashes.

orKeep all flames, sparks, or smoking materials away from the battery.

presentHydrogen is always present in battery cells, is highly combustible, and may explode if ignited.

reach ofKeep batteries out of reach of children.

sulfuric acidBatteries contain sulfuric acid which is highly corrosive. Do not allow acid to contact your eyes, skin or clothing.

If acid gets into your eyes, flush your eyes with clean water for at least 15 minutes and get immediate medical attention. If acid gets on your skin, thoroughly wash the area. If you feel pain or a burning sensation, get medical attention immediately.

  • When lifting a plastic-cased battery, excessive pressure on the case may cause battery acid to leak. Lift with a battery carrier or with your hands on opposite corners.
  • Do not attempt to jump start your vehicle if your battery is frozen.
  • NEVER attempt to recharge the battery when the vehicle's battery cables are connected to the battery.
  • The electrical ignition system works with high voltage.

    NEVER touch these components with the engine running or when the Engine Start/Stop button is in the ON position.

Jump starting procedure


Your vehicle has a battery in the luggage compartment, but when you jump start your vehicle, use the jumper terminal in the engine compartment.

  1. Position the vehicles close enough that the jumper cables will reach, but do not allow the vehicles to touch.
  2.  Avoid fans or any moving parts in the engine compartment at all times, even when the vehicles are turned off.
  3.  Turn off all electrical devices such as radios, lights, air conditioning, etc.

    Put the vehicles in P (Park) and set the parking brake. Turn both vehicles OFF.

  4. Open the engine hood.

  1. Connect the jumper cables in the exact sequence shown in the illustration. First connect one jumper cable to the red, positive (+) jumper terminal of your vehicle (1).
  2.  Connect the other end of the jumper cable to the red, positive (+) battery/ jumper terminal of the assisting vehicle (2).
  3.  Connect the second jumper cable to the black, negative (-) battery/ chassis ground of the assisting vehicle (3).
  4.  Connect the other end of the second jumper cable to the black, negative (-) chassis ground of your vehicle (4).

    Do not allow the jumper cables to contact anything except the correct battery or jumper terminals or the correct ground. Do not lean over the battery when making connections.

  5. Start the engine of the assisting vehicle and let it run at approximately 2,000 RPM for a few minutes. Then start your vehicle.
  6.  Keep your vehicle operating for at least 30 minutes at idle or driving to assure your battery receives enough charge to be able to start on its own after the vehicle is shut off. A complete dead battery may require as long as 60 minutes runtime to fully recharge it. If vehicle is run for less, the battery may not restart.

If your vehicle will not start after a few attempts, it probably requires servicing. In this event please seek qualified assistance. If the cause of your battery discharging is not apparent, we recommend that you have your vehicle checked by an authorized HYUNDAI dealer.

Disconnect the jumper cables in the exact reverse order you connected them:

  1. Disconnect the jumper cable from the black, negative (-) chassis ground of your vehicle (4).
  2.  Disconnect the other end of the jumper cable from the black, negative (-) battery/chassis ground of the assisting vehicle (3).
  3.  Disconnect the second jumper cable from the red, positive (+) battery/ jumper terminal of the assisting vehicle (2).
  4.  Disconnect the other end of the jumper cable from the red, positive (+) jumper terminal of your vehicle (1).


battery can be harmful toAn inappropriately disposed battery can be harmful to the environment and human health. Dispose of the battery according to your local law(s) or regulations.


To prevent damage to your vehicle:

  • Only use a 12-volt power supply (battery or jumper system) to jump start your vehicle.
  • Do not attempt to jump start your vehicle by push-starting.

If the engine overheats

If your temperature gauge indicates overheating, you experience a loss of power, or hear loud pinging or knocking, the engine may be overheating. If this happens, you should:

  1. Pull off the road and stop as soon as it is safe to do so.
  2.  Shift the gear to P (Park) and set the parking brake. If the air conditioning is ON, turn it OFF.
  3.  If engine coolant is running out under the vehicle or steam is coming out from the hood, stop the engine. Do not open the hood until the coolant has stopped running or the steaming has stopped. If there is no visible loss of engine coolant and no steam, leave the engine running and check to be sure the engine cooling fan is operating. If the fan is not running, turn the engine off.
  4. Check for coolant leaking from the radiator, hoses or under the vehicle. (If the air conditioning had been in use, it is normal for cold water to be draining from it when you stop.)
  5. If engine coolant is leaking out, stop the engine immediately and call the nearest authorized HYUNDAI dealer for assistance.


running,While the engine is running, keep hands, clothing and tools away from the moving parts such as the cooling fan and drive belt to prevent serious injury.


coolant cap and/or watercooledNever remove the engine coolant cap and/or watercooled intercooler coolant cap or the drain plug while the engine and radiator are hot.

Hot coolant and steam may blow out under pressure, causing serious injury.

Turn the engine off and wait until the engine cools down. Use extreme care when removing the coolant cap. Wrap a thick towel around it, and turn it counterclockwise slowly to the first stop. Step back while the pressure is released from the cooling system. When you are sure all the pressure has been released, press down on the cap, using a thick towel, and continue turning counterclockwise to remove it.

  1. If you cannot find the cause of the overheating, wait until the engine temperature has returned to normal.

    Then, if coolant has been lost, carefully add coolant to the reservoir to bring the fluid level in the reservoir up to the halfway mark.

  2. Proceed with caution, keeping alert for further signs of overheating.

    If overheating happens again, we recommend that you call an authorized HYUNDAI dealer for assistance.


Serious loss of coolant indicates a leak in the cooling system and we recommend the system be checked by an authorized HYUNDAI dealer.

When the engine overheats from low engine coolant, suddenly adding engine coolant may cause cracks in the engine. To prevent damage, add engine coolant slowly in small quantities. It may require several refilling cycles to properly fill the engine cooling system. If necessary, an authorized HYUNDAI dealer should be consulted to perform this task.


     Tire Pressure Monitoring System (TPMS)

     Check tire pressure

    Low Tire Pressure Telltale/TPMS Malfunction Indicator Low Tire Pressure Position Telltale and Tire Pressure Telltale (Shown on the LCD display) You can check the tire pressure in the Warning mode on the cluster. Refer to the

     Low tire pressure position and tire pressure telltale

    When the tire pressure monitoring system warning indicators are illuminated and a warning message displayed on the cluster LCD display, one or more of your tires is significantly under-inflated. The Low Tire Pressure Position Telltale will


     Transmission Control Module (TCM) Inspection Procedure

    Inspecting TCM ground circuit: Measure the resistance between the TCM and chassis ground. (Check the terminal connected to the chassis ground while using the back of the harness connector as the base point for TCM.) Normal reading (re

     Trailer towing equipment

    Hitches Information The mounting hole for hitches are located on both sides of the underbody behind the rear tires. It's important to have the correct hitch equipment. Crosswinds, large trucks going by, and rough roads are a few reasons why