Volkswagen Golf / Golf GTI / Jetta. Service manual - part 1078

27-55

 

  

  

Note:  

  

  

New generation batteries are 
equipped with a central gas venting 
system and integrated 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. 

    

CAUTION!

 

Results of inadequately secured 
battery:

 

-  Install hold-down bracket with bolt 

(tightening torque: 25 Nm). 

-  Reinstall insulation jacket where 

applicable. 

-  Reconnect battery 

 

Page 27-

43

 . 

 

Shorter battery service life due 
to vibration damage.

 

 

Battery cell and plate damage.

 

 

Electrolyte leakage due to 
battery case damage.

 

 

Poor collision safety.

 

Battery, removing and installing

13/2/2005

27-56

 

  

  

Battery with clipped fuse 
holder, removing and 
installing 

 

  

  

WARNING!

 

  

  

Prior to handling or servicing 
batteries, read, understand and 
observe the Warning and Safety 
measures for lead-acid batteries 

 

Page 27-4

 . 

 

  

  

Special tools and auxiliary items 
needed  

    

Battery, removing  

 VAG 1331 Torque wrench (or 

equivalent 5 - 50 Nm ) 

-  Disconnect battery 

 

Page 27-

46

 . 

    

-  Remove 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, removing and installing

13/2/2005

27-57

 

  

  

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:   

    

It must not be possible to move a 
battery to the left or to the right.   

-  Install battery so battery carrier 

lug -arrow- engages in battery 
foot strip cut-out -1-. 

Battery, removing and installing

13/2/2005

27-58

 

     Battery is inserted correctly when 

center cut-out in battery foot strip 
aligns with threaded hole in battery 
carrier -arrows-.  

Note:  

New generation batteries are 
equipped with a central gas venting 
system and integrated 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. 

-  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. 

    

CAUTION!

 

Results of inadequately secured 
battery:

 

-  Install hold-down bracket with bolt 

(tightening torque: 25 Nm). 

-  Reconnect battery 

 

Page 27-

49

 . 

 

Shorter battery service life due 
to vibration damage.

 

 

Battery cell and plate damage.

 

 

Electrolyte leakage due to 

Battery, removing and installing

13/2/2005