Auto Box Reset

mercmanuk

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NEW TO THE FORUM ,KEEP READING ABOUT AUTO GEARBOX RESET AND IT LEARNS YOUR STYLE OF DRIVING!!!CAN ANYONE GIVE ME ADVISE ON HOW TO DO IT AND HOW DOES IT LEARN "YOUR" STYLE OF DRIVING

CHEERS GREAT FORUM
 

Alps

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need to go to a merc specialist or a dealer who do it thro the diagnostics socket.

easy with the caps lock , welcome to the forum!:)
 

Shude

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Originally posted by Alps
need to go to a merc specialist or a dealer who do it thro the diagnostics socket.
If only I could remember the sequence to do it yourself! It's something like select W, select S, drop all the way down to 1st, back up to D and then press the gas pedal all the way to the bottom. I can't even remember who told me it now either :(
 

RichardM

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Does anyone know how far back the gear box remembers? If you were to drive very hard for 1000 miles would be adapt completely and not matter how it was driven before that?
 

Steve_Perry

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I thought disconnecting the battery for 10+ minutes cleared the adaptive shifting pattern memory?

S.
 

GregE240

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I'm going to have my fluid changed this month I reckon.....95K miles and counting. I'll get Mr Gayle to reset the thing as well. I reckon the fluid will look like Guinness when it comes out, and I can't wait for smoother changes (not thats its too bad at the moment).

For those that have changed the fluid: does it kickdown any quicker now, or will I still have the moment of terror every time I pull out to overtake someone? :D


Cheers,

Greg

PS - come on Nick......think! ;)
 

Shude

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Originally posted by RichardM
Does anyone know how far back the gear box remembers? If you were to drive very hard for 1000 miles would be adapt completely and not matter how it was driven before that?
After 30 minutes on the autobahn at about 120mph+ the gearbox went insane. It must have been thinking "ohh he LIKES to drive around everywhere at 5000 rpm eh?". It waited until redline before changing for about 5 minutes after that autobahn run. The reset trick I was told about was for use on the dragstrip or the racetrack :) . I'm told if you reset the autobox that's exactly how it behaves - it waits until the last possible second to change, and then slowly adapts.
 

sym

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Originally posted by Shude
After 30 minutes on the autobahn at about 120mph+ the gearbox went insane. It must have been thinking "ohh he LIKES to drive around everywhere at 5000 rpm eh?". It waited until redline before changing for about 5 minutes after that autobahn run. The reset trick I was told about was for use on the dragstrip or the racetrack :) . I'm told if you reset the autobox that's exactly how it behaves - it waits until the last possible second to change, and then slowly adapts.

Actually - that's very interesting indeed. That is exactly how my car behaved the last time that the battery was disconnected for a while. I thought the different gearbox reaction was due to something else (long story, won't go into it now !) which I subsequently found could not have been the case . . .but the battery disconnect may have had something to do with it if it really does reset things.

S.
 

jimmy

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I know that the engine ECU re-learns after a battery disconnect and I am guessing the gearbox would too.

@Greg

The fluid change will (probably) not affect the timing of the kickdown, I didnt notice anything.

The gearchanges are much smoother though, hard to tell when it changes gear unless you are looking at the rev counter or pushing it along briskly.
 

GregE240

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Originally posted by Shude
If only I could remember the sequence to do it yourself! It's something like select W, select S, drop all the way down to 1st, back up to D and then press the gas pedal all the way to the bottom. I can't even remember who told me it now either :(
Just to experiment I tried this before going home tonight.

And I'm sure it made a difference to something. The car felt responsive, more so than usual. Placebo effect? I don't think so. Nothing has changed.....

Slight moment of panic when it wouldn't turn over, but Nick forgot to mention after pressing gas pedal all the way down, return to P otherwise it won't start!

Motorway drive to IBM tomorrow so I will report further.

Nice one Nick - have a banana :bannana:

Cheers, Greg
 

Steve_Perry

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Like Jimmy I noted that my gear changes were smoother after an auto box oil change. The kickdown occured at the same revs and the shift pattern was the same but the actual changes were smoother, most notable when driving with a cold engine.

S.
 

Paul Grainger

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I too have just changed the oil in my 5-speed tiptronic autobox, after 50k miles. The old oil that came out looked (and smelled) ok - but I definitely see an improvement in changes between first and second gears (up and down).

Paul G
 

Shude

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Originally posted by GregE240
Just to experiment I tried this before going home tonight.

And I'm sure it made a difference to something. The car felt responsive, more so than usual. Placebo effect? I don't think so. Nothing has changed.....

Slight moment of panic when it wouldn't turn over, but Nick forgot to mention after pressing gas pedal all the way down, return to P otherwise it won't start!

Motorway drive to IBM tomorrow so I will report further.
I didn't say I've tried it myself did I? :)

I might do now someone else has :p
 

jimmy

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B@GGER!!:(

I tried that reset sequence out of curiosity, when I restarted the engine my glow-plug light goes off and then comes back on for about a minute before going out.

I think that means there is a fault, coincidence??

I shall leave the battery disconnected for the rest of the afternoon and see what happens.
 

Dieselman

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Jimmy

The glow plug light is indicating a glowplug failure. Hmmmm!
 

jimmy

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Originally posted by Dieselman
Jimmy

The glow plug light is indicating a glowplug failure. Hmmmm!

Yes you are right, when I started it from cold this morning there was a (more) noticable knock for quite a while until it warmed up. I looked at the glow-plugs last night, not that easy to get at so I have ordered 5 and will replace the lot whilst I have the engine stripped.

Just a bit of a coincidence that I try the above sequence and then a glow plug fails, whats the chances of that happening?:confused:
 

sym

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Originally posted by jimmy
whats the chances of that happening?:confused:

About the same as fitting a K&N filter and having your MAS die 25 miles later, I guess !

S.
 

GregE240

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Just heard my 210 has passed its MOT :bannana:

Thought the rear boots might be a bit low (well, they are a bit low) but thought I'd let Mr Gayle drop my auto box oil out, replace it and reset the box.

I'll report back on how it feels on the drive home. Also I'm getting the front ARB bushes replaced - they were a bit low last service and the front suspension is crashing a bit now on our fine roads in the UK :rolleyes:

Couldn't see the point of driving all the way over to Oldbury and then getting a bill for £26 or something.

Greg (happy bunny)
 

GregE240

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Leaving a Smokescreen.....

Went over to Oldbury to pick the car up. Left Andy Gayle's at around 5:45pm and once I got out of Birmingham, the difference after having both jobs done was amazing. The front suspension work has now seen the welcome return of the "magic carpet" ride I bought the car for. The jitteriness has gone and no more crashing over pot holes. Yeees!

And as for the auto box? Well, I was invited to look at the oil that came out of it (96K). Two words guys: BLACK TREACLE. Staggering really, it poured like custard compared to the new stuff. And what a difference! Changes are almost imperceptible, its that good. Those of you who think your tranny oil will last forever - think again - this is clearly spin from M-B. I just cannot see how that black, sticky stuff was going to last another 10K, let alone 100K. The kickdown IS better, not quicker per se but smoother, much much smoother.

So, get your transmission oil replaced! You won't regret it.

However, the story doesn't end here......

On my way home, tanking it along the M6, getting dark and all of a sudden I've got flashing blue lights behind me. Shit. Was I speeding? Well, 80-85 but no more. Oh well. I pull over and he walks along to the car:

"Evening sir. Are you aware of the blue smoke coming out from under your car?"
"Er, no, sorry. This self dimming mirror in here has probably obscured it. I've just come from a garage - its been MOT'd <shows MOT cert>"
"Well, I suggest you get back there if you can, sir - something is clearly wrong. I'll let you get on your way."

Blimey! Nothing of the BiB's! So I phoned Andy Gayle in the vain hope he'd be there. He was, and told me to bring it back, but take it easy. I did, and it turned out the guy who refilled the box filled it when it was cold, but up to the 80 degree mark on the stick. So when the box got hot, it escaped via the brether on the gearbox and got burnt on the exhaust. Andy drained off about a litre of oil and got me on my way again. I'm delighted to report the oil looked just like the oil that went in - lovely and clean.

So in summary then: get your gearbox oil changed. But don't overfill it!

Greg
 

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