Precautionary measures
If the prescribed procedure is not followed, there is a risk of burns from acid released from the battery. In addition, there is a risk of injury and damage if the battery explodes. Damage to the electrical equipment of the car is also possible.
- avoid contact with eyes, skin, clothing and the varnished surface of the car body. It has a corrosive effect. If electrolyte gets into contact with it, wash it off with clean water and, if necessary, consult a doctor;
- do not allow new growth or open flames in the immediate vicinity of the battery;
- use protective glasses;
- protect the auxiliary battery cable from damage by rotating parts such as radiator fan blades.
Both batteries must have a nominal voltage of 12 volts. The cover over the battery must be removed.
A discharged battery can freeze at -10°C. Before connecting the jump starter cable, the frozen battery must be thawed.
The discharged battery must be properly connected to the vehicle's electrical system.
1. Check the electrolyte level in the discharged battery. If necessary, add distilled water and screw in the plugs.
2. Place the cars in such a way that their metal parts do not touch each other, otherwise a current may occur when the positive poles are connected.
3. Apply the parking brake on both vehicles. Set the manual transmission to neutral and the automatic transmission to "P" ="Park".
4. Turn off all electrical consumers, including the phone in the car.
5. Leave the engine of the supply vehicle to idle. This prevents damage to the vehicle's alternator due to voltage spikes when starting the second vehicle.
6. Connect the starting aid wires in the following sequence:
- a) Connect the red wire to the positive terminal of the battery of the vehicle A whose engine needs to be started.
- b) Connect the other end of the red wire to the positive terminal of vehicle B's power supply battery.
- c) Connect the black wire to the negative (-) terminal of the supply battery B.
- d) Connect the other end of the black wire to a good ground on the receiving vehicle.
Caution: Do not connect the cable to the negative terminal of a discharged battery.
The best way to do this is with a metal part that is firmly screwed to the power unit. When connecting a wire to the negative pole of a discharged battery, it can explode under unfavorable conditions due to sparking and the formation of detonating gas.
Caution! The terminals of the connected jump starter cables must not contact each other. The terminals of the cables from the positive battery terminal must not touch any metal parts (body or frame), forming a short circuit to ground (-).
7. Start the engine of the car with a discharged battery and let it idle. When starting, operate the starter continuously for no more than 10 seconds, since the terminals and wires heat up due to high current consumption. Therefore, it is necessary to provide "cooling" pauses lasting at least half a minute.
If the engine starts with difficulty, do not use the starter for a long time unless necessary. When starting, there is a constant injection of fuel into the system. It is better to establish the cause of the difficult start.
After successfully starting the engine of a car with a discharged battery, leave the engine running at idle speed and do not remove the "supply bridge" for at least 3 minutes.
To avoid voltage spikes when disconnecting auxiliary wires, turn on the interior air conditioning and rear window heating in a car with a discharged battery. Do not turn on the headlights, otherwise the voltage drop will burn out their bulbs.
8. Disconnect the auxiliary wires after starting the engine in the reverse order of connection. First, the black wire (-) is disconnected from the receiving vehicle, and then from the battery of the supply vehicle. The red wire (+) is first disconnected from the battery of the supply vehicle, and then from the receiving vehicle.
The original version is on the portal AudiManual.ru