How to Get Your Car Out of Battery Saver Mode, How to Get Your Car Out of Battery Saver Mode – 5 Tips To Do This, KevweAuto

How to Get Your Car Out of Battery Saver Mode – 5 Tips To Do This

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Modern cars are equipped with a battery saver or sleep mode that deactivate certain electrical systems after the engine is off to prevent battery drain. While helpful, this can be annoying if it persists when you go to start your car again. Here are 5 tips to get your vehicle to “wake up” from battery saver mode quickly.

Table of Contents

1. Open And Close The Driver’s Door

The simplest way to get your car out of battery saver is to open and close the driver’s door. This triggers the vehicle’s sensors and is often enough to reactivate all electronics back to normal operational mode.

Do this even before putting the key in the ignition. Listen for sounds of systems like power windows resetting. Then start the car as normal.

2. Press the Brake or Start Button

If opening the door doesn’t work, try pressing the brake pedal if you have an automatic. This simulates the action of shifting from Park and should bring the accessories back online.

For push button start cars, press the engine start button without your foot on the brake. This turns the ignition to the accessory position, exiting battery save mode.

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3. Turn Headlights On and Off

Flipping the headlight switch on and then back off can serve as a reset trigger. Headlights draw a large electrical load. Powering them on signals the car computer to enable the system voltage required for them to illuminate.

4. Roll Down and Up Power Windows

Similarly, you can try rolling down the electric windows, then back up. This draws battery to run the motors. Doing so may sufficiently wake the vehicle’s computer and related electronics.

5. Disconnect and Reconnect Battery

If nothing else works, temporarily disconnect the negative battery cable for 30 seconds to reset the car’s computer. This may force all systems to reboot from scratch. Reconnect cable and test operation.

Be sure to enter any anti-theft codes again afterwards. Overall this is an effective last resort to break battery saver mode.

Why Cars Enter Battery Saver Mode

There are a few reasons why a car computer may activate its battery protection mode:

  • Extended time parked – To prevent drain after several hours without driving
  • Interior lights left on – To avoid complete discharge from illuminated lamps
  • Doors left ajar – Protects against a door staying open overnight
  • Low voltage incident – If battery briefly drops too low, it triggers protection
  • Parasitic drains – If current leak detected, it cuts power to eliminate draw
  • Computer glitches – Bugs in the software can randomly activate it

Understanding what originally put your car to “sleep” can prevent it in the future through better operating practices.

Signs Your Car Has Entered Battery Saver

How can you tell if your car has gone into its battery protection mode? Watch for these signs:

  • Lack of normal sounds – No chime or relay click when door opens
  • Dim or inoperative dashboard – Gauges and screens off or faint
  • Climate controls inactive – Fan and lights won’t activate
  • Power windows non-responsive – Switches have no effect
  • Radio presets cleared – Stations resets to default
  • Sluggish starting – Slow cranking from lower voltage
  • Battery light remains on – Indicates charging system still goes to sleep
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Recognizing these symptoms quickly lets you apply reset tips before the battery drains further or damage occurs.

Electrical Loads That Draw Battery

What drains the battery when the engine is off? These electrical loads are the main culprits:

  • Interior dome lights and map lamps
  • Exterior lighting like headlights, DRLs, tail lamps
  • Power windows and seats
  • Safety systems such as alarm and immobilizer
  • Constant battery parasitic draws through damaged wiring
  • In-car electronics like radio, infotainment screen and ports
  • Engine and emissions computers with volatile memory

Managing these draws by turning lights and electronics off helps avoid activating battery saver mode.

Tips To Prevent Battery Drain When Parked

To reduce the risk of your car going into its sleep mode, minimize loads when parking through:

  • Fully closing doors and trunk
  • Switching off interior lighting
  • Disabling accessories like power seats
  • Turning engine completely off rather than idling
  • Not leaving electronics charging unattended
  • Fixing any wiring issues causing parasitic drains
  • Using a quality trickle charger when storing long term

Proper shutdown procedures prevent over-discharge situations.

FAQ About Car Battery Saver Mode

How long until car goes into battery saver mode?

Most vehicles will enter sleep mode within 24-48 hours of being parked. Higher electrical draws can shorten this to under 12 hours. Newer models activate faster than older ones.

Why won’t my car turn back on after battery saver?

If left in sleep mode too long, the battery may drain to a point it cannot restart the engine. Jump starting or recharging the battery is then required.

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Does battery saver mode drain the battery?

While it reduces draw, battery saver isn’t foolproof. Parasitic drains or leaving lights on can still slowly discharge the battery over weeks or months in this mode.

Will a car start after battery saver shuts off?

It should if the battery isn’t fully dead. The car may start weaker than normal. Let it run 15+ minutes to recharge. If it won’t start, jump start it.

How can I prevent my car’s battery from draining?

Shut off all lights and electronics. Fix wiring issues. Disconnect battery when storing. Use a maintenance charger. Check voltage monthly. These steps prevent draining.


Cars enter battery saver mode automatically to protect the battery from fully discharging when parked over long periods. Simple actions like opening the door, hitting the brake, or turning on lights can “wake up” a car from sleep mode. Preventing unnecessary drains when parking and disconnecting the battery during storage will reduce the chances of needing to exit saver mode at all. Paying attention to your car’s electronics behavior will clue you in quickly if its battery saver has activated, allowing you to reset it and get back on the road.

Ejenakevwe Samuel

I'm Ejenakevwe Samuel, and my blog is all about sharing the love for cars. Through my blog, I pour my heart into educating fellow car enthusiasts in everything they need to know about their beloved rides. Whether it's driving tips, maintenance tricks, or the latest trends, I aim to empower others to make informed decisions and take care of their vehicles like a pro.

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