Battery (With Clip Secured Fuse Holder)
Battery (with Clip Secured Fuse Holder), Removing And Installing
CAUTION!
Before beginning repairs on the electrical system:
- Obtain the anti-theft radio security code.
- Switch the ignition off.
- Disconnect the battery Ground (GND) strap.
- After reconnecting battery, re-code and check operation of anti-theft radio. Also check operation of clock and power windows.
Special tools, testers and auxiliary items needed
- VAG 1331 Torque wrench (or equivalent 5 - 50 Nm)
Battery, removing
First remove battery cover and fuse holder from battery:
- Switch off ignition.
- Unclip battery positive cable from retainer -1-
- Press locking lugs together -2- and remove battery cover.
CAUTION!
Do not loosen or remove ground strap from body. Disconnect from battery only.
- Disconnect battery Ground (GND) strap from battery negative post.
- Remove bolt -1- on (+) positive terminal clamp.
- Unclip and remove fuse holder mounting -2-.
- Slide fuse box out from mounting in direction of -arrow-.
- Lift fuse box away from battery and secure to front hood support with elastic cord.
- Release battery positive terminal clamp securing bolt -arrow- and remove.
- Remove screws -arrows- and remove cover -1-.
- Remove M8 x 30 hex bolt -arrow-.
- Remove battery hold-down bracket.
- If present, disconnect central gas vent hose from top cover.
- Carefully lift battery together with insulation from engine compartment.
Battery, installing
To ensure battery seats securely, only install batteries with a 10.5 mm battery foot strip and adhere to the following work sequences:
- Install battery so battery carrier lug - 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.
Battery is inserted correctly when center cut-out in battery foot strip aligns with threaded hole in battery carrier -arrows-
- On batteries with a hose for central venting ensure that the hose is not squashed. Only then can the battery vent freely.
- On batteries without a hose for central venting ensure that the opening on the upper side of the battery cover is not blocked.
NOTE: New generation batteries are equipped with a central gas venting system and The grated flame trap. Function: Gases produced during charging escape through a central opening on the side of the upper cover. The integrated flame trap prevents flammable gases in the battery from igniting. The flame trap is comprised of a small round fiberglass mat with a diameter of 15 mm and a thickness of 2 mm. Working as a one-way-valve, it allows gases produced during charging to vent.
- Fit battery hold-down bracket and tighten M8 x 30 securing bolt to 22 Nm.
- Install positive clamp onto battery positive terminal.
NOTE:
- Battery terminal clamps must only be fitted by hand without force, this prevents damage to battery housing.
- Battery terminals must no longer be greased.
- Tighten battery positive terminal clamp securing screw to 6 Nm.
- Release elastic cord from fuse holder and slide into mounting.
- Clip fuse holder mountings into battery box -1 and -2-.
- Install positive terminal clamp.
- Tighten securing bolt to 6 Nm.
- Only after the fuse holder and positive terminal have been secured should the negative terminal clamp be installed.
- Tighten securing bolt to 6 Nm.
- Reinstall cover -1- with screws -arrows-.
- Reinstall and secure battery cover.
- Clip positive cable into retainer.
CAUTION!
If battery is not secured properly, the following will result:
- Shortened battery service life due to vibration damage.
- Battery cell and plate damage.
- Electrolyte leakage due to battery case damage.
- Poor collision safety.