How to open a car door if the battery is dead?

The older the car, the more pressing the problem of a suddenly discharged battery becomes. Although new cars are not immune to this problem. This may happen due to a manufacturing defect or lack of proper maintenance during the pre-sale period. In high mileage cars, battery failure usually occurs for the following reasons:

1. Battery aging. If the battery installed in the hood is more than 3 years old, the probability of its discharge increases sharply.
2. Excessive load on the battery from numerous installed additional devices. A car scanner, a video recorder, an alarm system, a media system, tuning interior lighting, remote engine start and similar devices themselves do not consume much energy, but all together they can drain an old battery quite quickly.
3. Forgotten headlights and other electrical appliances of the car while parked for a long time.
4. Minus temperature “overboard”.
5. Poor contact at battery terminals.
6. Short circuit in the vehicle's electrical circuit.
7. Initially, a battery of less power is installed than required by the specifications of this car model. This happens when buying used cars from unscrupulous sellers.
8. Generator failure or break in the battery-generator circuit. At the same time, while the car is moving, no current from the generator flows to the battery, and the car drives for some time only due to the battery charge. As a result, after some time the battery becomes completely discharged.

When the battery is dead, two problems arise:

1. Inability to get into the car due to the central locking being blocked.
2. Even if you open the door with a key or other means, you will not be able to start the engine.

Battery dead, doors locked

A very common problem for more modern cars. The central locking, powered by the battery, is blocked and does not receive the signal from the unlocking key fob. There is no current supplied to the electric drive of the opening mechanism, and even with the key, the door cannot be opened. Some manufacturers of modern cars get out of this situation by installing an independent power source for the central locking system (central locking). But its charge also needs to be monitored, and not all models have this function.

What to do in such a difficult situation? There are several tips on how to power a discharged battery from an external source with the car closed. These are methods such as connecting an external charged battery to the starter through the protection of the engine compartment or powering the network through the license plate light. The tips are quite workable, but there are two nuances that can make them completely useless:

1. All such recommendations are intended for people who have a good understanding of the electrical system of their car, have a set of necessary tools, enough free time, and in winter, also a warm garage. If your car repair experience is limited to topping up the necessary technical fluids and inflating tires, it’s better not to take risks, but immediately contact specialists in emergency car opening. This will save both time and money. After all, even such a simple process as hammering a nail cannot be learned from instructions on the Internet. You need to hammer fifty nails and hit your fingers a couple of times to master this simple skill. As for complex technical manipulations with the car’s electrical system, there is much more at stake than a broken finger. One of my friends tried it on his own open the door on Kia Rio. The result was a short circuit, burnt wiring and a week-long restoration, which cost him a significant amount.
2. The second significant drawback is the presence of a charged battery, be it a neighbor’s car battery or a starter charger. Before writing the article, I interviewed familiar car owners to see if they had one. Of the eight respondents, only one had a starter-charger (he had encountered this problem earlier). The rest rely on “maybe it will pass.” Three of them had already “lighted” the battery from other cars. The rest monitor the condition of the battery themselves and constantly maintain it (add electrolyte, clean the contacts, check the voltage at the terminals).

Thus, it is better not to get into such a situation. Monitor the condition of the battery, maintain it, check the generator, fuses and wiring, and your car will thank you with trouble-free operation.

If trouble with the battery does occur, contact specialized specialists. One of the well-known companies in Moscow and Moscow Region is Zamok.pro. Over the 10 years of its work in all regions of the city and region, this company has established itself as a reliable and professional lock service. Service technicians quickly and without damage open cars of any brand, regardless of the condition of the car, year of manufacture or complexity of the installed security system. We are ready to arrive around the clock to any point in the capital within 15 minutes. You just need to call or leave a request on the company’s website: Moscow Car Opening Service https://zamok.pro/vskrytie-avto 24/7 8(495)135-04-00. You will be pleasantly surprised by the level of service, politeness and quality of work of the Zamok.pro craftsmen!