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Did they give you any information about the part number for the correct dipstick?
XKdom - No, sorry, I don't have a part number for the genuine dipstick tool as I didn't actually buy one (just borrowed the Jag dealer's one while in his shop) but I was told by my friendly and helpful Jag dealer that such is available and can be purchased from them. A call to your nearest Jag dealer should get you that information. Likely the Merc dealer would also help though the part number would be different I'm sure. (The unkind Merc dealer here would not sell me the tool as I owned a Jag )
Be sure to gather the parts and supplies you need - dipstick tool,dipstick tube cap(s), fluid (Here is a link to the Mercedes sheet 236.14 which gives the OEM approved fluids for the 766.2 transmission. https://bevo.mercedes-benz.com/bevoo...236.14_en.html ), filter, pan gasket and, if needed, the pilot bushing. There is a good bit of solid information and advice in this thread. Be careful with the pan bolts (12 from memory) as the OEM ones are no longer available (at least here in Canada). Be sure to give the pan a good cleaning. Good luck.
About 26.25 inches or 667 mm of my A/T dipstick will be “in the tube” before it bottoms out.
I learned on this forum that the end of dipstick does not actually touch bottom, but that the ears or notches near the end of it prevent it from going in any further,
PS: with a decent scan tool one can observe the actual transmission fluid temperature. Using an IR gun to determine the transmission temperature is not accurate methodology, IMHO
Z
I would agree with you if you needed accuracy to the nearest degree, but you can see on the dipstick that the 25°c and 80°c marks are +-5°c, so the IR gun will be fine. I doubt if your 20+ year old temp sensor will be any more accurate than that anyway.
If you have a suitable scanner use that, if not an IR gun will be fine.
”…..I doubt if your 20+ year old temp sensor will be any more accurate than that anyway…”
hey now! My temp sensor is brand new !
But I must admit my thermostat is original. I tested 3 new ones of different manufacturers and none of them opened as accurately or as completely as the original one. So back in it went.
how do i get to the function to show me the gearbox temp?
you need an OBD-2 scanner that can read info from the transmission module. My moderately priced iCarSoft LR-1 can show this information. Not all scanner have this capability. Once the scanner is hooked up and the transmission temp setting is chosen, just shift the transmission from P or N into D or R (with your foot on the brake). Then the scanner display will show the transmission temp instead of the engine coolant temp.
if you leave the car in P or N, the temperature displayed will be the engine coolant, regardless of the scanner saying it is the transmission temp. Once you do the shift info D or R, the temp on the display will change and show the correct temperature for the transmission fluid.
the service bulletin referenced above (post #24) describes this better than me.
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