What Does Stop/start Not Ready Battery Protection Mode Mean?

The inability to start an automobile is one of the most infuriating aspects of owning a vehicle. People who rely on their cars to travel around and fulfill their daily responsibilities may find this a significant source of stress. But this aggravation is compounded by confusion about what the notice “stop/start not ready battery protection mode” implies. If you’re also anxious about it, this article might help you.

Why is my car in battery protection mode?

Most likely, your car is in battery protection mode because the voltage of your battery is too low. When a battery’s voltage falls below a certain level, the battery protection mode will be activated to protect the battery from being damaged.

Another reason is the battery that isn’t holding a charge as it used to, which can be caused by several factors such as a bad alternator or a problem with the electrical system. Batteries lose their ability to hold a charge over time, and eventually, they need to be replaced, especially if the battery is getting old.

Furthermore, if the car has been sitting for a long time without being used, the battery might have discharged completely and gone into protection mode.

Remember that if your car is frequently in battery protection mode, don’t drive it too much to avoid further draining the battery. You can also try charging the battery using a charger specifically designed for car batteries.

What does stop/start not ready battery charging mean?

If your vehicle is equipped with a stop/start technology, it is merely an advisory mode. If this occurs, the “start stop not ready battery protection mode” message will appear in the instrument cluster and on the infotainment screen.

The stop/start not ready message on some vehicle models might be a symptom of an issue with the ESS (Energy Storage System) that prevents it from charging. In this case, the battery will continue to power all your vehicle’s systems, but stop/start will not be available.

The auxiliary battery could also be an issue. It helps start the engine when the main battery is too weak to do so on its own. If your aux battery is weak, low, or dead, and you attempt to start the car with a fully-charged main battery, it could trigger this message. If your vehicle has this issue, you’ll need to have the aux battery replaced.

Keep in mind that this message isn’t a significant problem. The vehicle will still start as usual. However, if the message continues to happen often or you are concerned about your charging system’s health, take it out to a professional technician.

How to get rid of the stop/start not ready message in the car?

There are ways you could try to disable the stop/start not ready message:

  1. Navigate your car to an empty parking spot and turn off all electrical accessories, including radio, lights, etc. After a few minutes, turn the engine on. The battery message may go away even if it is still low.
  2. You may disconnect the negative battery terminal and wait a few minutes. After reconnecting the negative battery terminal, turn on your engine to see if the stop/start ready message is gone.
  3. Restarting the car may also help to clear the stop/start not ready message. The stop/start not ready message should be gone after this process is completed. If it’s not and this is a recurring error, there may be an issue with your car’s battery or electrical system which needs further investigation.

Nonetheless, keeping your car battery in good condition is the best way to prevent inconveniences. Have it tested regularly and replaced when necessary. You could also consider getting a battery backup system to keep your car running in case of an emergency. These systems can be beneficial in preventing your car from being stranded due to a dead battery.

What is battery protection mode on Lenovo?

The battery protection mode on Lenovo laptops is a feature that helps protect the battery from damage. When enabled, it will cause the laptop to automatically shut down if the battery level gets too low. This helps prevent the battery from being over-discharged and damaged.

Battery protection mode is usually disabled by default on laptops. Still, it’s always a good idea to enable it if any problems occur with charging the battery.

To enable or disable battery protection mode, go to Settings > System > Battery and toggle the switch next to “Battery Protection Mode” to the desired setting. You can also adjust other settings related to battery protection mode, such as how low the battery level must be before the laptop shuts down and how long it will wait before shutting down.

If you’re having trouble getting your laptop to power on, try checking to see if battery protection mode is turned on. If it is, try disabling it and see if that fixes the problem. If this does not fix the problem, there may be a more severe issue with the battery or laptop. In this case, it’s best to consult with a Lenovo support agent for assistance.


Knowing and understanding the “stop/start not ready” warning message built into most modern cars or devices, you can quickly determine if there is a severe problem in your car and knows how to address it. Just a friendly reminder, if you are not sure how to fix this issue, it is highly suggested to contact a qualified technician. This way, you can ensure that the problem is resolved correctly and that your car or device will be able to remain in top working condition.

About the author, Phil Borges

Phil Borges is a battery aficionado. He's written extensively about batteries, and he loves nothing more than discussing the latest innovations in the industry. He has a deep understanding of how batteries work, and he's always on the lookout for new ways to improve their performance.