Battery, Removing and Installing
Removing
- Switch ignition off.
- Open cover -1- for battery case and unhook.
- First disconnect negative GND terminal (arrow) from battery negative (-) pole.
- Disconnect positive B+ terminal from battery positive (+) pole.
CAUTION: Never disconnect or connect the positive B+ terminal from battery while the negative GND terminal is connected Danger of short circuit!
- Flip fuse holder -3- upward.
- Remove fastening bolt -1- from battery case and remove battery case together with heat protection jacket.
- Remove (M8 X 25) hex bolt -3-.
- Remove clamping bracket.
- Remove battery.
Installing
To guarantee the battery seats securely only install batteries with a 10.5 mm battery foot strip and adhere to the following procedures:
- Install battery so lug of battery carrier (arrow) engages in battery foot strip cut-out -1-. It must not be possible to move a battery to the left or to the right.
- The battery is correctly installed when the center cut-out in the battery foot strip aligns with threaded hole in the battery carrier (arrows).
- On batteries with hose for central venting, ensure hose is not kinked. Only then can battery vent freely.
- On batteries without hose for central venting, ensure opening on upper side of battery cover is not blocked.
- Install clamping bracket and tighten securing bolt -3- (M8 x 25) to 22 Nm (16 ft. lb).
- Re-install battery case -2- together with heat protection jacket.
- Fasten battery case with securing bolt -1-.
- Secure (+) positive terminal clamp -2- to positive terminal on battery.
NOTES:
- The battery terminal clamps may only be secured by hand without force in order to prevent damage to the battery housing.
- Battery terminals may no longer be greased.
- Tighten battery terminal clamp securing screw to 6 Nm (53 in.lb).
Only after the plus terminal securing clamp and the fuse holder have been installed may the Ground (GND) strap be secured to the negative terminal.
- Tighten terminal clamp securing screw to 6 Nm (53 in.lb).
NOTES:
- When the battery has been reconnected, check operation of electrical equipment (radio, clock and convenience electrics etc.).
- For OBD II vehicles, the readiness code for the Engine Control Module (ECM) must be re-generated after the battery has been disconnected.
- After installing, check if battery is seated securely. The following dangers exist with a loosely installed battery:
- Shortened service life due to damage from vibration.
- The cells in the battery will be damaged if the battery is not secured correctly.
- Damage to battery housing by clamping bracket (possibility of acid leaking, therefore subsequent higher costs).
- Poor crash safety
Batteries with central gas venting
There are two types of batteries with central gas vents:
- Batteries with a hose on central gas vent.
- Batteries without a hose on central gas vent.
It is absolutely necessary to use original sealing plugs in the battery screwed openings to guarantee the battery is sealed correctly.
Use original sealing plugs of same construction if lost or damaged.
The sealing plugs must be installed with an O-ring.
Functional notes for central venting:
- Batteries of the latest generation are equipped with a central venting system with anti-flash protection.
- The anti-flash protection consists of a small round fiberglass mat with a diameter of approx. 15 mm and a thickness of 2 mm. It functions similar to a valve to allow the gasses that form in the battery to vent.
- The gasses that form while charging can vent centrally through an opening on the upper side of the cover The anti-flash protection is also installed at this point, which prevents ignition of the flammable gasses in the battery.