One hundred percent return of the battery takes place at an ambient temperature of 27°C, at -18°C, the return efficiency drops to 40% and a little more than twice as much energy is required to start the engine.
starting power (starting current) indicates the battery's ability to start the vehicle in very cold weather. It shows the current in amps that the battery delivers for 30 seconds at -18°C without a voltage drop below 7.2 volts (the minimum level required for a reliable start). The higher this figure, the greater the starting power of the battery.
Standby power indicates the time in minutes during which the battery delivers a current of 25 amps at 27°C, i.e. the amount of time the battery provides for the operation of all auxiliary devices in the car at night and in bad weather with a faulty alternator.
In winter conditions, at temperatures below -18°C, the battery recharging efficiency decreases due to an increase in internal resistance. During short trips in winter, the energy expended by the battery to start the engine does not have time to recover and the battery starts to wear out, gradually discharging and, in the end, fails irreversibly.
During the summer months, on long trips, the engine becomes very hot and it often happens that it is difficult to start it again. For such «hot» Startups sometimes consume as much power as batteries require than in freezing weather. This applies especially to high-compression engines with large cylinder displacements, as well as to models equipped with an air conditioning system.
Disconnecting the negative wire
Access cover on suitably equipped models (IN) to the battery fits under the rear cup holder assembly (A)
Battery mounting diagram (G 1)
1. Connect a booster battery to the original battery.
7 - Auxiliary battery
8 - Module positive wire terminal
9 - Terminal of the negative wire of the module
W10 - Battery Ground
2. With models of the corresponding configuration (code ET2) activate the service mode of the TELE AID emergency call system (see Section Activation / deactivation of the service mode of the TELE AID emergency call system).
3. Appropriate models (code FG2) remove the cup holder (A).
4. Remove the access cover (IN) in the rear footwell.
5. Disconnect the negative cable from the battery (G1) negative wire (2).
6. Connect in reverse order. Do not forget to deactivate the service mode of the TELE AID system.
Attention! Refusal to use an auxiliary battery is associated with the need to enter a security code to activate the radio!
Removing the battery
1. Disconnect the negative cable from the battery (see above).
2. Remove the clamping bar.
3. Disconnect the positive cable from the battery.
4. Remove the battery from the installation niche.
5. Installation is carried out in the reverse order.
Purchasing a new battery
The above indicates the importance of choosing the right battery, taking into account the parameters of the engine and vehicle equipment.
The first thing to look for when buying a new battery is its performance. Such characteristics - three. First: RATED OUTPUT VOLTAGE which has the same value (12 V) for all used on passenger cars, which virtually eliminates the possibility of error.
Note. When buying, it is advisable to check the battery with a load plug.
Second: CAPACITY, measured in Amp/Hours (A/h) and, roughly speaking, determining the amount of electricity contained in the battery. The choice of the value of this parameter determines how long the battery is able to provide the possibility of cranking the engine with a starter, more precisely, how many attempts to start the engine can be made. The price of a battery is almost directly proportional to its capacity. AND third characteristic: STARTING CURRENT, measured in Amperes (A), i.e. current supplied to the starter when starting the engine. The amount of starting current on batteries can be indicated according to four different standards: GOST (for domestic batteries), EN (European standard), SAE (american standard) and DIN (Germany). The last, German standard, is closest to our GOST and is affixed on most European-made batteries «default», i.e. when the standard system is not specified. The higher the starting current, the greater the speed the starter develops and the greater the torque it is able to transmit to the engine flywheel.
Ideally, the replacement battery you purchase should fully comply with the requirements specified in the vehicle's operating instructions in terms of its performance, under which its service life will be maximum. Purchasing a battery with a smaller capacity can hardly be considered a good money saver, since it will last much less and, in addition, can lead to unpleasant troubles associated with starting the engine in the winter season. You should not purchase a battery with an excessively large starting current - such a hobby is associated with the risk of failure of the starter. If the standard battery does not crank the engine properly, the best thing to do is to change the engine oil first, which will most likely fix the problem automatically.
Recently, the country's market is full of low-quality goods and fakes. Batteries are also no exception. There are several signs by which it is possible with a sufficient degree of probability to distinguish the original from a fake.
First and, perhaps, most importantly: the country of manufacture and the manufacturing plant must be indicated on the battery case, it is better if with an address.
Second: the date of manufacture must be indicated, which is of particular importance for sealed batteries (unattended) type. The delivery set must include a technical passport, while the presence of instructions is not strictly required, due to the fact that in the West, batteries practically do not go to retail, and their installation on a car is usually carried out by car service specialists.
Third: high-quality batteries have a good appearance. The housing must have smooth edges, be equipped with reliable plugs and smooth pole terminals covered with protective caps, which are often covered with a layer of special anti-corrosion grease.
Battery charge
Charge a failed battery in accordance with the charger manufacturer's instructions.
Basic Programming Procedures
After restoring on-board power, the following basic programming procedures must be performed.
1. Turn on the ignition, then activate the side window power windows one by one, fully raising the side windows and holding the corresponding switch buttons pressed for about 1 second. Switch off the ignition.
2. When the on-board power supply is turned off, the ESP control module switches to emergency mode, which is accompanied by a message on the multifunction display screen «EL. STAB. PROGRAM GO TO GARAGE». To return the ESP system to the operating mode, it is necessary to activate the steering angle sensor: start the engine at idle, then turn the steering wheel from lock to lock, finally returning it to the neutral position - the message should disappear from the screen. Switch off the ignition.
3. Turn on the ignition and move the power front seat forward as far as it will go, - continue to hold the appropriate switch pressed for about 1 second more. Repeat the same procedure with the head restraint, raising the latter to its highest position. Switch off the ignition.