How to open and start the car if the battery is dead
Content
Modern vehicles with installed equipment provide a decent level of comfort and safety on the road. However, many owners of such cars do not know how to act if everyday malfunctions are suddenly discovered. For example, they do not know how to start the car if the battery has run out at the most inopportune moment.
A battery can die for several reasons. Imagine the situation: you have not used the car for some time, and when you got behind the wheel again, you were faced with a dead battery. A defective battery prevents the doors from opening and starting the car. If you use a regular key with an automatic key fob, there should be no problems when opening with a faulty battery. If the key has not been used for a long time, the larva could easily rust, and it will be impossible to insert the key there.
Do not rush to get upset. There are a number of proven methods that will help open the car and ensure that the battery starts without calling specialized services.
Content
- 1 How to understand that the battery is dead
- 2 How to open a car with a dead battery
- 2.1 How to open the door of a foreign car
- 2.2 Video: open Renault with a dead battery
- 3 Ways to "resuscitate" a dead battery
- 3.1 With the help of acceleration from an external force
- 3.1.1 From the "pusher"
- 3.1.2 in tow
- 3.2 "Lighting" from a donor car
- 3.2.1 Video: how to properly light a car
- 3.3 With a starter charger
- 3.4 Rope on the wheel
- 3.4.1 Video: how to start a car with a rope
- 3.5 A bottle of wine
- 4 How to start a battery in an automatic transmission
- 5 Extended battery life
How to understand that the battery is dead
There are a number of signs that indicate battery problems. Most often, symptoms begin to appear prematurely, before the moment when the battery approaches the zero charge mark. If you diagnose the problem in a timely manner, you can avoid getting into an emergency situation.
In many cases, dead battery problems are easier to prevent.
There are the following symptoms of a dead battery:
- The alarm starts to work incorrectly. When you press the button on the key fob, the protection is turned off very slowly, the doors do not open periodically, the central locks simply do not work;
- The audio system in the car turns off immediately after the engine is turned off due to a too sharp voltage drop;
- Problems with the brightness of the light in the car, a decrease in the brightness of the headlights while driving;
- During the start, the engine starts after a starter jerk, then the device freezes for a second, after which it starts working in standard mode. In case of problems with the battery, the engine always starts more slowly than with a good battery;
- During warm-up, rpm indicators often jump. The problem is due to the fact that during this mode of operation, the car's engine increases energy consumption from the battery, which is almost empty.
How to open a car with a dead battery
There are several ways to open a car with a dead generator. The first method involves working under the car, so it is advisable to have not only an additional generator with you, from which a dead battery will be recharged, but also a jack, as well as two wires with a cross section of 2 centimeters and a length of about a meter. The sequence of actions in this case is as follows:
- Raise the car using a jack;
- We get to the engine after removing the protection;
- We find the positive terminal and clamp the wire on it with the help of the "crocodile" clip;
- We connect the negative wire to the car body;
- We connect the wires to a working battery. Make sure the terminals are connected correctly;
- After connecting the alarm, we open the car from the key fob;
- Open the hood, take out the discharged battery and charge it.
There are several easier ways to open doors. When the glass at the front door was not fully raised, you can stick a thin iron rod with a hook at the end into the resulting free space. Using a hook, we hook the handle and carefully pull the entire structure up. If the handle opens to the side, we perform similar manipulations, but we press on the handle, and do not pull it.
The next method is rarely used. With the help of an ordinary hammer, the glass in the car is broken from the driver's seat. It will not be superfluous to secure open areas of the body so as not to get hurt by the resulting glass fragments.
To implement the following method, you will need a wooden wedge. The length of the wedge is about 20 centimeters, the width at the base is about 4 centimeters. A meter-long metal rod should also be prepared. A wooden wedge is carefully inserted between the upper rear corner of the door and the pillar of the car and gradually driven in with a fist until a gap of about 2-3 centimeters wide is formed. A metal rod is inserted into the slot, with the help of which the lock lock is rotated.
Most often, a peg up to 20 centimeters long is used to open a jammed door, but it is not recommended to use a key in this case.
Another way is to have a drill or screwdriver handy. We select a suitable drill and cut out the lock cylinder. We add that after using this method, you will have to change the larvae in all the doors of the car.
The above methods are more suitable for domestic cars. Modern foreign cars are equipped with special anti-theft systems, for example, it will no longer be possible to insert a wire between the glass and the seal.
How to open the door of a foreign car
In order to minimize the likelihood of a situation where the door has to be opened by emergency means, it is worth periodically opening the locks with an ordinary key. So the lock will not rust, and if the automation turns off, you can always open the car in manual mode.
In foreign cars, access to the cabin occurs by a small bend in the door area. To implement this method, you will need a long wire, a screwdriver and a piece of any fabric. It is desirable to make a bend in the area of \uXNUMXb\uXNUMXbthe car rack - a fabric is initially pushed in there, after which a screwdriver is inserted (a rag will help avoid damage to the surface of the car). The door is gradually bent with the tool until the wire crawls into the gap formed.
The driver's door is bent with a screwdriver, and then a wire is inserted there
Video: open Renault with a dead battery
Ways to "resuscitate" a dead battery
Even an expensive and high-quality battery after a while begins to lose charge on its own. Basically, the following factors provoke the problem:
- The battery has been serving for more than 4-5 years, and over time, the available charge decreases;
- For some reason, during the trip, the battery is not recharged;
- There are places with current leakage in the car network;
- When the engine was turned off, the headlights or audio system were left on;
- Critical exposure to extreme temperatures.
It is possible to start a car with a dead battery, so let's look at several ways to solve the problem.
With the help of acceleration from an external force
To start the car, it is enough to set it in motion. You can do this by:
- Acceleration up to 5 km / h when pushing;
- Ask another driver on the road to take your car in tow.
From the "pusher"
Acceleration of a car in this case is gaining when using human power. It is best to use this method on a road with a slight slope to facilitate the task. Pushing should only be done by the rear pillars or the trunk of the vehicle, otherwise there is a high probability of serious injury. Only a car with a manual transmission can “start” in this way.
Starting a car “from a pusher” is quite popular in our country, but this method is only suitable for cars with manual transmission
After the car has reached a speed of 5-10 kilometers per hour, it is necessary to shift into gear and smoothly release the clutch.
in tow
For towing, you need a special cable with a length of at least 5 meters, as well as another car on the go, which will act as a tug.
The vehicles are connected to each other by a cable, after which the tug accelerates your car to 10-15 km/h. When the specified speed is reached, 3rd gear is engaged and the clutch is smoothly released. If the car is started, you can disconnect the tow rope.
A tow rope should be in the trunk of every car in case of emergencies.
It is extremely important when starting the battery with the help of a tugboat to coordinate the actions of both drivers and discuss the signs that will be given to each other while driving. Uncoordinated towing can result in serious damage to vehicles and create an emergency on the road.
"Lighting" from a donor car
To “light up” a car, you need another auto-donor, which has a fully functional battery. The lighting of a 12-volt unit is made exclusively from a 12-volt donor. If your battery has a voltage of 24 volts, you can use two donor batteries of 12 volts, which will be connected to each other in series.
The method includes the following steps:
- Cars are placed next to each other, but do not touch.
- The engine of the donor car is turned off, the wire from the negative terminal is removed from the second car. When carrying out work, polarity is observed; if this rule is violated, there is a high probability of failure of all electronics in both cars.
- The positive terminals of the batteries are connected to each other, then the minus is connected to the donor and only after that to the car that needs resuscitation.
- The donor car starts for 4-5 minutes and is left on.
- Then the second machine is started, it should work for 5-7 minutes.
- The terminals are disconnected, but the car is left to work for another 15-20 minutes so that the battery has time to recharge.
Video: how to properly light a car
With a starter charger
This method is the easiest and safest. A special device is connected to the network, the mode switch is set to the "start" position. The negative wire of the starter-charger is connected to the engine block in the area of the starter, the positive wire is connected to the positive terminal.
Depending on the model, the electrical circuit of the ROM may differ, but the principle of operation is always the same: the device is connected to the network and supplies current to the battery terminals
The ignition key is turned in the car, if the car is started, the starter-charger can be turned off.
Rope on the wheel
This method is useful if there is no tug car nearby, and there is no one to push your transport.
In order to start a car in this way, you need a rope (about 5-6 meters in length) and a jack. With the help of a jack, it is necessary to make sure that the drive wheel is in a raised state above the ground. The rope is tightly wound around the wheel, after which the ignition and transmission are turned on. To start the car, you need to pull hard on the end of the rope.
Video: how to start a car with a rope
A bottle of wine
The most extraordinary way that really works. It will help to start the car in deaf conditions, when only wine is at hand.
It is necessary to open the wine and pour a glass of drink directly into the battery. As a result, an alcoholic drink will provoke an oxidative reaction, and the battery will begin to give out current, which is enough to start the car.
The method with wine is only suitable for extreme cases, after such a start, the battery will have to be changed to a new one.
Unfortunately, you can start the battery with wine only once.
How to start a battery in an automatic transmission
To start a car with an “automatic”, methods with lighting from another battery are suitable, as well as the option of connecting the battery to the ROM. Try also lowering the battery into a warm bath or simply replacing it with a new one if you have one on hand.
The use of external force will not help start a car equipped with automatic transmission
Tried all the ways, but did not get the result? Try warming up the vehicle in a warm box.
Extended battery life
10 tips will help not only increase the battery life in a car, but also avoid emergency situations that are associated with the discharge of this unit in a vehicle:
- If the battery will not be used for a long time, be sure to charge it;
- The electrolyte must be poured to such a level that the plates are not exposed;
- The complete discharge of the battery is the main reason for the reduction of its service life;
- Monitor the tension of the alternator belt, and if loosened, immediately replace it;
- Make sure that there are no leaks in the electrical network of the car;
- Be sure to turn off all electrical appliances before leaving the vehicle;
- In winter frosts, take the battery home at night;
- Avoid oxidation of battery wires;
- In winter, it is better not to leave the battery in a discharged state;
- In the winter season, it is advisable to use special covers for the battery, which will help prevent discharge.
Remember that it is much easier to control the battery charge and change a worn-out battery in a timely manner than to face emergency situations later, start and open a car using improvised methods.
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