Volkswagen Jetta / Bora: Electrical System Manual - part 8

Disconnecting and reconnecting bat‐

teries

WARNING

Danger of injury! Observe warning notices and safety regula‐

tions 

⇒ page 2

 !

4.1

Disconnecting battery

Note

♦

By disconnecting the battery earth wire (open circuit), safety

is ensured when carrying out work on the electrical system.

♦

The battery positive wire need only be disconnected for re‐

moval of the battery.

– Switch off the ignition and all electrical consumers.
– Release catch -arrow- and take cover off battery box.
– First unscrew battery earth clamp -1- from battery negative

terminal.

– Then unscrew battery positive clamp -2- from battery positive

terminal.

4.2

Connecting battery

Caution

Observe  instructions  on  connecting  battery  terminals

⇒ page 4

 .

Special tools and workshop equipment required

Jetta 2005 ➤ , Bora 2006 ➤

4. Disconnecting and reconnecting batteries    

29

Note

After connecting the battery and switching the ignition on the ESP

and TCS warning lamp -K155- lights up permanently. The warn‐

ing lamp goes out automatically if a distance of 15 to 20 km/h is

driven straight ahead. This activates the steering angle sender -

G85- again.

Caution

Disconnecting and connecting the battery as described in the

Workshop Manual 

⇒ page 29

 .

– Fit battery positive clamp -2- to positive terminal of battery and

tighten securing bolt to specified torque setting 

⇒ page 36

 .

– Fit battery earth clamp -1- to negative terminal of battery and

tighten securing bolt to specified torque setting 

⇒ page 36

 .

– Carry out the procedures as detailed in the table.
Steps after connecting battery

Procedures

Performed

Switch ignition on and off again

using ignition key

 

Read fault memory: ⇒  Guided

fault finding using VAS 5051A .

 

Clock: Check time on clock and

change as necessary.

 

Electric windows: Open all

electric windows fully and close

again.

 

Functional check: of all electri‐

cal consumers.

 

If necessary, table can be printed out.

Jetta 2005 ➤ , Bora 2006 ➤

30

Removing and installing battery

WARNING

Danger of injury! Observe warning notices and safety regula‐

tions 

⇒ page 2

 !

5.1

Models with a petrol engine

Special tools and workshop equipment required
♦ Torque wrench -V.A.G 1331-

Removing:
– Disconnect the battery 

⇒ page 29

 .

– Pull panel of battery box out upwards in direction of arrow.

– Unscrew securing bolt -1- and remove battery holder -2-.

Jetta 2005 ➤ , Bora 2006 ➤

5. Removing and installing battery    

31

Caution

A loosely fitted battery creates the following dangers:

♦ Shortened service life due to damage from vibration (dan‐

ger of explosion).

♦ The cells in the battery will be damaged if the battery is

not secured correctly.

♦ Damage to battery housing by clamping bracket (possi‐

bility of acid leaking, therefore subsequent higher costs).

♦ Poor crash safety

Installation is performed in the reverse order of installation; when

doing this, note the following:
– Tighten threaded connections to specified torque settings

⇒ page 36

 .

– After installing, check that battery is seated securely.
– Connect the battery 

⇒ page 29

 .

Caution

Disconnecting and connecting the battery as described in the

Workshop Manual 

⇒ page 29

 .

5.2

Models with a diesel engine

Special tools and workshop equipment required
♦ Torque wrench -V.A.G 1331-

Jetta 2005 ➤ , Bora 2006 ➤

32