How to Change the Oil and Filter on a Mercedes 7 Gtronic 722.9 Automatic Transmission

Using a step by step approach, this video will show you how to DIY change the transmission oil and filter in a Mercedes 7Gtronic (also knows as 722.9) Transmission / Gearbox. Also, how to achieve the correct fluid level adjustment after the oil change.

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Specialist Tools for this job:

Infra-red thermometer - Essential for checking that the oil temperature is right prior to the level check / adjustment
UK link: https://amzn.to/3flDGgu
USA link: https://amzn.to/39WDVOb

Small torque wrench (capable of 8Nm / 6ft/lb as a lowest setting) - The Aluminium oil pan bolts are easy to shear if not torqued correctly
UK link: https://amzn.to/35SbJd5
USA link: https://amzn.to/3m62X0d

Hand fluid pump and hose for refilling the gearbox
UK link: https://amzn.to/2VcxDSn
USA link: https://amzn.to/2K3EsmO

Long Arm Allen keys (size up to 10mm required) - Used for the sump plug removal
UK link - https://amzn.to/3qcXB6w
USA link - https://amzn.to/3ImGhHu

Set of trim removal tools - makes removal of the undertray plastic fittings much easier
UK link: https://amzn.to/3aJWt35
USA link: https://amzn.to/371IRQo

Recommended parts and fluids

Transmission Service Set: Pan Gasket, bolts set, internal filter etc
UK link: https://amzn.to/34VyV9q
USA link: https://amzn.to/3pzVg4h

You will need up to 7 litres of fluid. (How much you are able to drain and replace will depend on the version of the gearbox that you have but 7 litres is the maximum). I would have been happy to use any of the oils on the list, please see bottom of this page.

UK link: Fuchs Titan ATF 4134 - https://amzn.to/3aSfuCn
USA link: Fuchs Titan ATF 4134 - https://amzn.to/37Z8eTq

The parts that I used on the Mercedes CLK 320cdi, fitted with the 7-Gtronic 722.9 gearbox that features in this video are as follows:
BUT I RECOMMEND YOU CHECK ALL PART NUMBERS ARE SUITABLE FOR YOUR CAR!

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Standard Tools:
(If you are using a trolley jack and axle stands)
Trolley / Floor Jack (2 or 3 metric Ton rating recommended)
UK link: https://amzn.to/37dLKwf
USA link: https://amzn.to/3ErcKIb

Trolley / floor jack sill / pinch weld adaptor (To AVOID damaging the sill / pinch weld)
UK link: https://amzn.to/332GRaY
USA link: https://amzn.to/3m2hn1d

Axle / Jack stands (pair of)
UK link: https://amzn.to/3Gwfbd9
USA link: https://amzn.to/3oCX1NB

(I was using a manual 4 poster lift) Hamer lift - http://www.hamercarlift.com/

Breaker bar (1/2” drive) 450mm / 18" long
UK link: https://amzn.to/39mnAm4
USA link: https://amzn.to/3m4ejl0

½” drive metric socket set
UK link: https://amzn.to/36aSWtB
https://amzn.to/372Y03P

¼” drive metric socket set
UK link: https://amzn.to/3mqJnfK
USA link: https://amzn.to/2VVGYyj

Torx "bits" to fit screwdriver or small socket set
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USA link: https://amzn.to/2LmoZPw

Here is a list of some of the models where you will find the 7G tronic transmission.
C-Class (model 203/204/205)
CLK-class (Type 209)
CLS-class (Type 218/219)
E-class (Type 207/211/212)
S-Class (Model 220/221/222)
SL-Class (model 230/231)
SLK-Class (model 171/172)
Sprinter (Type 906)
Viano / Vito (Type 447)

From mid-2010 onwards a 7G Tronic plus auto transmission was fitted and this one used blue transmission fluid. NOT FEATURED IN THIS VIDEO.

Recommended oil: It is important that your oil has MB-approval 236.14 on the label. Some of the most common MB-approval 236.14 oils are as follows:
Fuchs Titan ATF 4134
Mobil ATF 134
Pentosin ATF 1345
Shell ATF 134
Valvoline ATF Pro 236.14

Refilling kit:
M12x1.5 (male thread) to 6mm ID (internal diameter) hose – Hosetail
0.5m Length of 6mm ID hose
2 x ¼” BSP (male thread) to 6mm ID hose – Hosetails
Mini ball valve with ¼” BSP female threads on both sides
0.5L capacity Hand operated / Syringe type pump
4x 7-9mm ID hose clamps
PTFE tape – apply to all threaded joints

00:00 - Intro
00:10 - Mercedes W203 C209 7G tronic 722.9 transmission fluid change
02:50 - Remove Mercedes W203 C209 722.9 Transmission Pan
06:19 - Mercedes 7G tronic 722.9 transmission filter
12:46 - Mercedes 7G tronic 722.9 Transmission fluid fill
17:58 - Mercedes 7G tronic 722.9 Sump Plug Torque

Affiliate links: This video and description contains affiliate links, which means that if you click on one of the product links, I may receive a small commission.

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