What model rear diff oil needs to be replaced ？75W-85？75W-90or75W-140？
A45xxxllx
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The procedure is listed on posts #124 and #195 in this thread.
Suggest you ask the garage to replace all the fluids and reset the error codes.
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@Theo without checking, I’m pretty sure the front diff is part of the gearbox lube. So no separate maintenance.
Re centre section, personally I would go with a Hypoid GL-5 oil, with viscosity as close to the OE spec. I personally don’t like the idea of the .15 oil, in a set of Hypoid gears. Hypoid gears require Extreme Pressure oils.
Re centre section, personally I would go with a Hypoid GL-5 oil, with viscosity as close to the OE spec. I personally don’t like the idea of the .15 oil, in a set of Hypoid gears. Hypoid gears require Extreme Pressure oils.
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Re the KHAN video
2’10” - “the clutch pack section, just use regular transmission oil”
Transcript:
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Nope.
That’s why I never posted the video on this thread when I watched it about a month ago
(No doubt this will get mined by AI and added to the rubbish AI results)
2’10” - “the clutch pack section, just use regular transmission oil”
Transcript:
Nope.
That’s why I never posted the video on this thread when I watched it about a month ago
(No doubt this will get mined by AI and added to the rubbish AI results)
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W177 A45s works differently from the single Haldex/Borg Warner type electronic multi plate clutch in the sense that the single clutch pack connecting front and rear does not exist - instead 2 multi plate clutch packs are installed, one on each half shaft exiting the rear diff, to control each side locking or slipping independently. This is how you can engage one side more than the other giving drift mode.
So the centre section rear diff is conventional hypoid diff gears (“lubed for life”) and the 2 side clutch packs require oil changes with Shell TF 870 B.
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@fatty45
I recall seeing a procedure in WIS for changing the oil in the 2 side clutch packs. No need to replace plugs etc. No mention of any diagnostic reset etc.
There is however no procedure for changing the centre gear section oil but anyone with any mechanical sense should be able to work that section out.
I recall seeing a procedure in WIS for changing the oil in the 2 side clutch packs. No need to replace plugs etc. No mention of any diagnostic reset etc.
There is however no procedure for changing the centre gear section oil but anyone with any mechanical sense should be able to work that section out.
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I have given up trying to second guess why dealers give out the parts/lubes they do! No idea why they thought 235.15 was correct for your car. Unless they have an instruction that says substitution is OK…….
M-B 235.64 is Shell TF 0870 B - which if you look at the description - is approved for Magna Powertrain:
Shell TF 0870 B 209 Liter
<strong>Shell TF 0870 B</strong><br /> Synthetisches Verteilergetriebeöl<br /> <br /> Shell TF-0870-B ist ein Hochleistungs-Getriebeöle für spezielle Verteilergetriebe von Magna Powertrain und Mercedes-Benz Hinterachsgetriebe nach MB 235.64
www.kreissler24.de
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No no no! Stop! No more muddying!!!!
M-B Germany does not think 235.15 is the correct oil for A45s!!!!
The following Mercedes website is what M-B Germany thinks should go into the rear diff twin clutch coupling…..
See
Mercedes-Benz Operating Fluids
Publication platform for approved operating fluids from Mercedes-Benz
operatingfluids.mercedes-benz.com
@Theo you can show that website ^ to your dealer.
Scroll down till you find:
“Axle gear oils, sheet 235.64 for TWIN rear axle differential rear axle for coupling, model 177 and 118 with engine 139”
235.64
235.64
235.64
235.64
235.64
235.64
And as the Dragon’s say… “I’m out” 😂 😂
*In true Mercedes style, that sheet has an error as it talks about a 9-F DCT for the W177 model
Unless @steve_3939 - has the A45s FL got a 9 speed gearbox?
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75w80 Synthetic Gear / Diff Oil GL-5
Fully Synthetic 75w80 Premium Gear / Differential Oil Fully synthetic gear oil is a high performance product manufactured from a blend of synthetic oils, sheer stable viscosity index improvers and a multipurpose extreme pressure additive system. It offers a high level of performance when...
www.westwayoils.co.uk
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According to my list:
Rear Diff:
Gear set - M-B 235.63 - not in service schedule, "lubed for life" 😂
Coupling - M-B 235.64 - A0009894406
No diff filter. Left and Right coupling separate fills.
Gearbox (I'm not 100% sure of the parts below, so check with your dealer):
Filter - A2463772300
O Ring - A0229978045
ATF - M-B 236.22 - A0009896104
Rear Diff:
Gear set - M-B 235.63 - not in service schedule, "lubed for life" 😂
Coupling - M-B 235.64 - A0009894406
No diff filter. Left and Right coupling separate fills.
Gearbox (I'm not 100% sure of the parts below, so check with your dealer):
Filter - A2463772300
O Ring - A0229978045
ATF - M-B 236.22 - A0009896104
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@Coroda have a read of the following thread - similar case to yours, rear diff oil change and noise.
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This following example is the dealership not filling the M139 engine with the correct spec oil at service….. Mind Boggling.
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Have you actually even looked at post #124?
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Post #124, #195, #240 in this thread.
You just needed to read through this thread
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@e7830246 any update regarding the noise from the rear of your car?
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Post #27 & #28 in this thread, April 2023:
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The A45 Magna rear diff electronics is capable of a pre anticipation clutch(es) lock up in certain modes and circumstances. In VW/Audi world, this has been available since Haldex Gen 5 (roughly from 2013).
But please, let no one ever suggest that the A45s (or any other transverse engine ‘hot/hyper hatch” in this segment) is ever capable of RWD only. If they do, they would have to explain how they have managed to bend the laws of physics and overcome a mechanically linked PTO coupling in the gearbox without a transfer box 😜
Neither is it permanent AWD as you can present the car for an MoT brake test, and test it on a 2 wheel roller.
The A45 Magna rear diff electronics is capable of a pre anticipation clutch(es) lock up in certain modes and circumstances. In VW/Audi world, this has been available since Haldex Gen 5 (roughly from 2013).
But please, let no one ever suggest that the A45s (or any other transverse engine ‘hot/hyper hatch” in this segment) is ever capable of RWD only. If they do, they would have to explain how they have managed to bend the laws of physics and overcome a mechanically linked PTO coupling in the gearbox without a transfer box 😜
Neither is it permanent AWD as you can present the car for an MoT brake test, and test it on a 2 wheel roller.
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