Volkswagen Jetta Hybrid (2013 year). Manual — part 26
pull hoses off.
– Pull air damper -1- upwards out of rubber bushes -arrows-.
Continuation for all vehicles
WARNING
You can suffer an electric shock.
An electric shock can be fatal.
Observe general warning instructions for work on the high-
93 ; General warning instructions for work on the high-voltage
system .
♦ The system must first be de-energised by a high-voltage
technician before any work is done on the high-voltage
system and before any repair work is done on the body.
♦ All work on vehicles with a high-voltage system must only
be carried out by electrically instructed persons. The work
must be supervised by a high-voltage technician.
WARNING
High voltage on high-voltage system of hybrid vehicle. Danger
of electric shock! Following procedure also requires work on
high-voltage system. De-energise high-voltage system now ⇒
high-voltage system .
– Remove power and control electronics for electric drive -JX1-
control electronics for electric drive -JX1- .
Jetta Hybrid 2013 ➤
7. Mechatronic unit
97
High-voltage cables; Removing and installing high-voltage
wiring harness for hybrid battery -PX1- .
– Disconnect connector -1- from selector valve -2- of mecha‐
tronic unit and pull wiring harness off retainer on front of
gearbox.
WARNING
Risk of soiling.
Thoroughly clean all joints and surrounding areas before dis‐
mantling.
In the procedure below the hydraulic system of the mecha‐
tronic unit will be opened. Soiling will cause the system to fail!
– Unscrew union nut -1- for hydraulic line -3- from engine.
– Then, pull retaining clip -2- out of valve block/mechatronic unit.
– Pull hydraulic line -3- simultaneously out of engine and valve
block/mechatronic unit.
• Seal hydraulic line connections immediately with suitable seal‐
ing plugs to ensure that as much hydraulic fluid as possible
remains in the hydraulic line.
• Also seal the connections on engine and valve block/mecha‐
tronic unit with suitable sealing plugs.
• For allocation of sealing plugs and hydraulic fluid refer to ⇒
Electronic parts catalogue “ETKA” .
Note
For reasons of clarity, the engine/gearbox assembly is removed
in illustration.
– Pull breather cap -1- off mechatronic unit. Breather -2- remains
attached to breather connection -3- for this.
• Breather -2- must be removed to prevent that hydraulic fluid
escapes from the mechatronic unit.
• The breather will be damaged during removal and must be
renewed.
• Breather connection -3- must now be sealed with a sealing
plug or sealing cap -0AM 325 120 A- so that no oil can escape.
Order sealing plugs via the ⇒ Electronic parts catalogue “ET‐
KA” .
Jetta Hybrid 2013 ➤
98
♦ Do not under any circumstances touch the contacts in the
gearbox connector by hand. The resulting static discharge
could destroy the control unit and, consequently, the me‐
chatronic unit.
– Touch earth connection (without gloves) in order to discharge
yourself.
– Disconnect connector -1- for mechatronic unit for dual clutch
gearbox -J743- . To do this, pull locking mechanism upwards
-arrow-.
– Unscrew nuts -2- and -3- from centre hex studs.
– Remove wire retainer from gearbox.
– Put used oil collection and extraction unit -V.A.G 1782- un‐
derneath.
– Unscrew oil drain plug of gearbox.
– Allow oil to drain off, then screw in oil drain plug firmly again.
– Using a screwdriver, carefully unclip gearbox input speed
sender 3 -G641- from housing in -direction of arrow-.
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7. Mechatronic unit
99
the dual clutch from the plungers of the mechatronic unit. If this
is not done, the engaging levers will jam the mechatronic unit at
the plungers and prevent the mechatronic unit from being re‐
moved.
– Insert assembly lever -T10407- under plunger -2- between
gearbox housing and both engaging levers -1- -arrow-, as
shown in diagram.
– Insert assembly lever -T10407- just enough until groove is
flush with housing rib -arrows-, as shown in diagram. Do not
insert onto stop.
Note
The back of the assembly lever must rest against the gearbox
housing when doing this.
– Turn assembly lever -T10407- about its axis 90° in anti-clock‐
wise direction -arrow A- to lift off engaging lever from plungers
-1- -arrow B-.
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