P
r
o
t
e
c
t
e
d
b
y
c
o
p
y
r
i
g
h
t
.
C
o
p
y
i
n
g
f
o
r
p
r
i
v
a
t
e
o
r
c
o
m
m
e
r
c
i
a
l
p
u
r
p
o
s
e
s
,
i
n
p
a
r
t
o
r
i
n
w
h
o
l
e
,
i
s
n
o
t
p
e
r
m
i
t
t
e
d
u
n
l
e
s
s
a
u
t
h
o
r
i
s
e
d
b
y
V
o
l
k
s
w
a
g
e
n
A
G
.
V
o
l
k
s
w
a
g
e
n
A
G
d
o
e
s
n
o
t
g
u
a
r
a
n
t
e
e
o
r
a
c
c
e
p
t
a
n
y
l
i
a
b
i
l
i
t
y
w
i
t
h
r
e
s
p
e
c
t
t
o
t
h
e
c
o
r
r
e
c
t
n
e
s
s
o
f
i
n
f
o
r
m
a
t
i
o
n
i
n
t
h
i
s
d
o
c
u
m
e
n
t
.
C
o
p
y
r
i
g
h
t
b
y
V
o
l
k
s
w
a
g
e
n
A
G
.
– Install new seals -2- and -3- on diesel fuel filter upper part
-1-.
– Fit diesel fuel filter upper part -1- with seal on diesel fuel filter
lower part and start bolts approx. one turn.
Caution
Ensure correct installation position of diesel fuel filter upper
part to lower part.
– Tighten bolts -arrows- alternately and diagonally.
– Tighten bolts to 10 Nm torque.
Bleeding fuel system
Procedure: »Fuel prep.-Diesel inj.« ⇒ Fuel prep. diesel inj.; Rep.
gr. 23 ; Filling/bleeding fuel system »Filling/bleeding fuel system«
Note
♦
If there is still air in the fuel system, the engine can change to
emergency running mode during road test. Switch engine off
and clear event memory.
♦
For technical reasons it is possible that several cross referen‐
ces are not directed to the correct chapter. In this case select
the procedure manually in the information.
4.21 Cooling system: Check frost protection
and coolant level
Note
♦
All engines are filled with coolant additive G12 Plus Plus (pur‐
ple). Because of its positive characteristics, ensure that only
G12 Plus Plus is used when replenishing. G12 Plus must not
be replenished because the positive characteristics of G12
Plus Plus are then not effective.
♦
Coolant additive G12 Plus Plus protects the complete cooling
system against corrosion and reduces the formation of sludge
and corrosion.
♦
G12 Plus Plus is suitable as a filled-for-life filling for cast iron
and all-aluminium engines and gives optimum protection
against frost, corrosion damage, scaling and overheating.
♦
G12 Plus Plus raises the boiling point to 135 °C and ensures
better heat dissipation.
♦
The coolant concentration must be at least 40 % (frost pro‐
tection down to -25 °C) and should not exceed 60 % (frost
protection down to -40 °C). Otherwise frost protection is re‐
duced again and cooling effectiveness is also reduced.
♦
Frost protection must be guaranteed to approx. -25 °C.
Touareg 2010 ➤
Maintenance - Edition 11.2011
46 4. Descriptions of work