Inside Line: TecRMI

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Noises from the transmission oil on a VW Polo 1.2-litre (9N_)

Reference number(s): 35A7

Fault symptoms:

Increased wear on transmission.
Noises in the 1st and 2nd gear from the transmission region.

Causes:

Wrong transmission oil used.

Remedy:

Gearbox oil change
If the action has already been accomplished, there will be a sticker in the region of the spare wheel recess, the toolkit, or the driver’s footwell, and the action is documented in the service booklet.

Procedure:

Drain:

Fig-1-Drain
1 Selector shaft 2 Retention pin

Run up transmission to operating temperature.
Remove air filter housing. (If required)

Lock the switch shaft.
Press gearshift lever downward and snap in the retention pin.
At the same time, rotate retention pin in the direction of the arrow.
(see Figure1)

Lift vehicle.
Remove underride guard.
Unscrew the gearbox oil drain plug. (1)
Remove bearing journal. (2)
Drain gear oil.

Collect drained oil.
Observe disposal regulations!

Fig-2-Drain
1 Gearbox oil drain plug 2 Bearing journal 3 Gearbox oil filler plug / Transmission oil control screw

Install bearing journal. (2)
Screw in oil drain plug. (1)
(see Figure2)

Disconnect retention pin. (1)
(see Figure1)

Purge:

Remove the back-up lamp switch. (1)
Connect hose with funnel to the back-up lamp switch hole. (1)
Top up oil via the bore.
Required filling quantity: 1,70 litres
Install back-up lamp switch. (1)
(see Figure3)

Start engine.
Keep engine running a couple of minutes with the gear engaged so as to distribute the gear oil.

Lock the switch shaft.
Press gearshift lever downward and snap in the retention pin. (1) (2)
At the same time, rotate retention pin in the direction of the arrow.
(see Figure1)

Unscrew the gearbox oil drain plug. (1)
Remove bearing journal. (2)
Drain gear oil.

Fig-3-Purge
1 Back-up lamp switch 2 Shift cable

Collect drained oil.
Observe disposal regulations!

Replace seal(s).
Install bearing journal. (2)
Screw in oil drain plug. (1)
(see Figure2)

Disconnect retention pin. (1)
(see Figure1)

Top up:

Remove the back-up lamp switch. (1)
Connect hose with funnel to the back-up lamp switch hole. (1)
Top up oil via the bore.
Replace seal(s).
Install back-up lamp switch. (1)
(see Figure3)

Continue assembly in reverse order of removal.

Required special tools:
Hose: Length approx. 600 mm, diameter 10 mm. (commercially available)
Funnel (commercially available)

Fault with heated seats

Reference number(s): 74B6

Fault symptoms:

Burnt smell in the interior
Seat cover is charred in the seat heating region.
Seat heating overheated or defective.

Causes:

Short in seat heating.

Remedy:

Repair tension wires of seat-back cover.

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