Hyundai Tucson: Battery

Hyundai Tucson - Fourth generation (NX4) - (2020-2023) - Owner's Manual / Maintenance / Battery


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.



Battery posts, terminals, and related accessories contain lead and lead compounds, chemicals known to the State of California to cause cancer, birth defects and reproductive harm.

Batteries also contain other chemicals known to the State of California to cause cancer. Wash hands after handling.


  • When you do not use the vehicle for a long time in a low temperature area, disconnect the battery and keep it indoors.
  • Always charge the battery fully to prevent battery case damage in low temperature areas.


If you connect unauthorized electronic devices to the battery, the battery may be discharged. Never use unauthorized devices.

For best battery service

  • Keep the battery securely mounted.
  • Keep the battery top clean and dry.
  • Keep the terminals and connections clean, tight, and coated with petroleum jelly or terminal grease.
  • Rinse any spilled electrolyte from the battery immediately with a solution of water and baking soda.
  • If the vehicle is not going to be used for an extended time, disconnect the battery cables.


To check the batteries, open the cover (B).

For 7-seater, the clips (A) must be removed first to open the cover.

Battery capacity label

  1. MF68L-DIN : The HYUNDAI model name of battery
  2.  12V : The nominal voltage
  3.  68Ah (20HR) : The nominal capacity (in Ampere hours)
  4.  RC 110min : The nominal capacity (in Ampere hours)
  5. 600A : The cold-test current in amperes by SAE/EN

Battery recharging

By battery charger

Your vehicle has a maintenance-free, calcium-based battery.

  • If the battery becomes discharged over a short time (because, for example, the headlamps or interior lights were left on while the vehicle was not in use), recharge it by slow charging (trickle) for 10 hours.
  • If the battery gradually discharges because of high electrical load while the vehicle is being used, recharge it at 20-30A for two hours.


Always follow these instructions when recharging your vehicle's battery to avoid the risk of SERIOUS INJURY or DEATH from explosions or acid burns:

  • Before performing maintenance or recharging the battery, turn off all accessories and stop the engine.
  • Keep all flames, sparks, or smoking materials away from the battery.
  • Always work outdoors or in an area with plenty of ventilation.
  • Wear eye protection when checking the battery during charging.
  • The battery must be removed from the vehicle and placed in a well ventilated area.
  • Watch the battery during charging, and stop or reduce the charging rate if the battery cells begin boiling violently.
  • The negative battery cable must be removed first and installed last when the battery is disconnected.

    Disconnect the battery charger in the following order:

  1. Turn off the battery charger main switch.
  2.  Unhook the negative clamp from the negative battery terminal.
  3. Unhook the positive clamp from the positive battery terminal.
  • We recommend that you use batteries for replacement from an authorized HYUNDAI dealer.


AGM battery (if equipped)

  • Absorbent Glass Matt (AGM) batteries are maintenance-free and we recommend that the AGM battery be serviced by an authorized HYUNDAI dealer. For charging your AGM battery, use only fully automatic battery chargers that are specially developed for AGM batteries.
  • When replacing the AGM battery, we recommend that you use parts for replacement from an authorized HYUNDAI dealer.
  • Do not open or remove the cap on top of the battery. This may cause leaks of internal electrolyte that could result in severe injury.

By jump starting

After a jump start from a good battery, drive the vehicle for 20-30 minutes before it is shutoff. The vehicle may not restart if you shut it off before the battery had a chance to adequately recharge. See "Jump Starting" in chapter 8 for more information on jump starting procedures.


battery can be harmful to theAn inappropriately disposed battery can be harmful to the environment and human health.

Dispose of the battery according to your local law(s) or regulation.

Reset items

The following items may need to be reset after the battery has been discharged or the battery has been disconnected.

  • Auto up/down window (see chapter 5)
  • Sunroof (see chapter 5)
  • Trip computer (see chapter 5)
  • Climate control system (see chapter 5)
  • Driver position memory system (see chapter 5)
  • Clock (see chapter 5)
  • Infotainment system (see infotainment system manual)


     Tires and wheels

    WARNING Tire failure may cause loss of vehicle control resulting in an accident. To reduce risk of SERIOUS INJURY or DEATH, take the following precautions: Inspect your tires monthly for proper inflation as well as wear and damage. &nb


    A vehicle's electrical system is protected from electrical overload damage by fuses. This vehicle has 5 fuse panels, one located in the driver's side panel bolster, the other in the engine compartment. If any of your vehicle's lights,

     Light bulbs

    We recommend that you consult an authorized HYUNDAI dealer to replace most vehicle light bulbs. It is difficult to replace vehicle light bulbs because other parts of the vehicle must be removed before you can get to the bulb. This is especial


     High Beam Assist (HBA)

    High Beam Assist will automatically adjust the headlamp range (switches between high beam and low beam) depending on the brightness of detected vehicles and certain road conditions. Detecting sensor (Front view camera) [1] : Front view

     Ower Seat Motor

    Component Location Lumber support motor Reclining motor Front height motor Slide motor Rear height motor Lumbar support switch Reclining switch Power seat switch Inspection Ower Seat Motor Remove the front seat assembly.