Purpose: Allows you to reprogram or recode all data for the new battery after it has been replaced.
Watch out! There are 4 lines of coding to do here.
Proceed :
1 – Engine off, ignition off, connect your official VAG-COM VCDS cable to the computer, then plug the other end into your vehicle’s diagnostics socket.
2 – Switch on the ignition and run the VCDS program.
Line 1:
3 – Click “Select,” then click “19 – CAN Gateway.”
4 – Click ” Adaptation – 10.”
5 – At the very top of this page, there is a drop-down menu.
From this drop-down menu, select “Battery Adaptation—Nominal Battery Capacity.”
6 – On this same page, there is a second drop-down menu toward the bottom
.
From this menu, select the rated capacity listed on your battery. For example: “70Ah“
Line 2:
3 – Click “Select,” then click “19 – CAN Gateway.”
4 – Click “Adaptation – 10.”
5 – At the very top of this page, there is a drop-down menu.
From this drop-down menu, select “Battery Adaptation—Battery Technology.”
6 – On this same page, there is a second drop-down menu further down
.
From this menu, select the corresponding value
. For example: For the VARTA E39, select “Etoffe” / “Fleece” for AGM.
Line 3:
3 – Click “Select,” then click “19 – CAN Gateway.”
4 – Click “Adaptation – 10.”
5 – At the very top of this page, there is a drop-down menu.
From this drop-down menu, select “Battery Adaptation—Battery Manufacturer.”
6 – On this same page, there is a second drop-down menu further down the page
.
From this menu, select the corresponding brand:
For example: For the VARTA E39, select “VAO.”
Line 4:
3 – Click “Select,” then click “19 – CAN Gateway.”
4 – Click “Adaptation – 10.”
5 – At the very top of this page, there is a drop-down menu.
From this drop-down menu, select “Battery Configuration—Battery Serial Number.”
6 – On this same page, there is a second drop-down menu toward the bottom
.
In this menu, enter the corresponding serial number:
Note: Enter only the last 10 digits of the serial number.
Battery Status Detection Features:
The battery status detection in the battery data module calculates the following values, which are transmitted via the LIN bus to the J533 diagnostic data bus interface:
1 “battery not present” detection: if the battery data module does not detect a battery for
more than 30 seconds, a corresponding bit is set to 1
2 voltage that temporarily allows for optimal battery charging
3 “engine start capability” bit. It indicates whether the battery is currently capable of starting
the engine or not
4. The amount of charge that can still be temporarily drawn from the battery before reaching the limit of
its ability to start the engine
5. The battery’s current state of charge
6. Battery aging. Battery aging can be determined using parameters such a
, including the battery’s energy storage capacity and instantaneous power output.
7 battery open-circuit voltage
8 battery internal resistance
The battery sensor in the J367 battery monitoring control unit:
Knowing whether the battery has enough electrical energy to restart the engine is essential for the start-stop system to function properly.
The control module is located directly on the “negative” terminal of the ground wire and is connected to the diagnostic interface via the LIN data bus.
Signal Usage:
The battery sensor records the following values:
– Battery temperature
– Battery voltage
– Charging current
The battery temperature is calculated using a lookup table and the ambient temperature.
It also allows for estimates of the battery’s charging time.
Using the data obtained in this way, it is possible to adjust the charging control—particularly the charging voltage—to the battery’s state of charge and operating conditions. The goal is to increase the availability of the start-stop system by optimally utilizing data from the starter battery.
Consequences in the Event of a Malfunction
If the battery sensor is defective, the battery status can no longer be detected correctly.
A fault is logged in the diagnostic interface’s fault memory. The start-stop system is deactivated.
Battery
The vehicle’s battery is housed in the engine compartment and protected by a battery tray. The size and type of battery depend on the engine version, equipment, and country-specific variant. Standard batteries, EFB batteries, and AGM batteries are used.
Vehicles with gasoline engines and start/stop systems are equipped with an EFB battery, while vehicles with diesel engines and start/stop systems are equipped with an AGM battery. Vehicles with auxiliary heaters typically have an AGM battery.
EFB
An EFB battery (short for Enhanced Flooded Battery) is a reinforced flooded battery. The positive plate inside the battery is coated with an additional layer of polyester mesh. This provides the battery’s active material with additional support on the plate. These batteries have greater resistance to charge-discharge cycles than standard batteries. During charging, an EFB battery is treated like a standard battery.
AGM Battery
In AGM (Absorbent Glass Mat) batteries, the battery electrolyte is retained within a microporous glass mat. An AGM battery is characterized not only by even greater resistance to charge-discharge cycles compared to an EFB battery, but also by its leak-proof design. When charging, follow the charger’s user manual and, if applicable, select the AGM battery program.
In the case of AGM batteries, the automotive battery electrolyte is retained within a microporous glass mat. In addition to
increased resistance to charge-discharge cycles, an AGM battery is characterized by its high level of leak resistance. Sealing is of crucial
importance, particularly when the battery is installed in
the passenger compartment. When charging, follow the charger’s user manual and, if necessary, select the program for
AGM batteries.
Below, we can see the brand, serial number, and manufacturer of the battery
