General Category > Central Vehicle Electronics/ZFE/GM issues
ESA and ESA Calibration
v-man:
--- Quote from: StephanT on May 29, 2013, 11:43:36 AM ---
--- Quote from: ilpo on May 28, 2013, 05:45:55 PM ---I have had issues with my ESA, now that I took a look at first I saw this:
--- End quote ---
Quite simple... for front and rear respectively it tells you what the maximum number of pulses is... i.e. from the one end to the other end.. there are 1130 pulses for the rear shock, and it also tells you what the current value is, of where it is right now... i.e. 33 for both your front and rear shock after calibration...
you will see these current settings change for different ESA modes... (obviously as the preload is in a different position)
...now what does this tell you.. well, it tells you that it is at position 33 of 1130 (these are the HALL sensor pulses that are measured... or of you like, at 3% of the travel of the preload...
now looking at our R1200GS Adventure.... after a calibration, I see the following:
Now looking at the rear shock, I can see that I am at position 61 and have a full scale of 2002, or in other words my rear preload is set at 3% of the travel of the preload... and my ESA is set on Comfort for a single rider (one helmet)... The Comfort/Nomal/Sport etc. are irrelevant here, cause they are rebound/damping related... what we are seeing here (the numbers) are for the preload, hence the single rider (1 helmet)...
what else do we learn from this...
that your ESA setting was probably set to single rider as well (hence the same 3 %)
and very importantly, THERE ARE MANY DIFFERENT VARIATIONS OF SUSPENSION used by BMW... see that our one has a max travel of around 2000 pulses, while your one had a max of just over 1100 pulses...
And this is one of the reasons why one needs to calibrate the ESA.. if we would remove the rear shock from OUR bike, and replace it with your shock, then on the singel rider (1 helmet), the ESA would set the suspension to approximately position 61 pulses... (without knowing that the max travel is only 1100 pulses... and effectively the preload would be set far too high... (6% where it should be 3%)
hope this makes some sense... ;D
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Hello Stephan -
I just ran the ESA calibration on my 2010 R1200GSA. My numbers were the same as ilpo ... would I expect to see the same numbers as you posted since you have a GSA also? Maybe settings are different for my older (older then yours) bike?
I thought I would try the calibration because I have been having some issues with suspension "releasing" when stopped. Since no codes were stored maybe it's a mechanical issue not electronic?
Thanks for any insight,
Don
StephanT:
hi Don,
not sure what you mean by "suspension releasing"?
on the same models I would expect to see the same range of values... although our rear sometime s goes to 2009 etc. but around 2000 is the range...
best,
Stephan
v-man:
--- Quote from: StephanT on July 30, 2013, 06:47:17 PM ---hi Don,
not sure what you mean by "suspension releasing"?
on the same models I would expect to see the same range of values... although our rear sometime s goes to 2009 etc. but around 2000 is the range...
best,
Stephan
--- End quote ---
Hello Stephan -
Thanks for your quick response. I thought the values would also be same for same model. I have been complaining to BMW for sometime regarding my suspension. Unfortunate for me my dealer is not much help ... if they can't "duplicate" the exact problem they won't do anything!
The "releasing" I was trying to describe is (doesn't happen all the time/everytime) - Sometimes when I stop the bike either parking or stopped for traffic the suspension feels like it's "releasing" and it raises the bike probably a good .75". It has caught me by surprise before where I almost dropped the bike when it would raise VERY quickly. It tends to happen when I have bike with full load or two up with partial loaded bags. Bike is storing NO CODES acording to BMW and also GS911. When the ESA calibration came out with your unit I thought maybe that would be the key ... I have done the calibration twice and still have same problem BUT our numbers do not match so I'm not sure what that means either?? I am at wits end and was considering replace with aftermarket shock but if it is in controls then problem will still exist except my wallet will be lighter!!!!
Don
StephanT:
hi Don
I have it on good authority that there are MANY different ESA combinations, over the years, and manufacturer swops and motor and spring changes etc...
we can't really tell what the max values are for all the springs, as we have probably not seen all of them yet... but all you really care about it that you get the max, and then you will see the current values to be 3%, 50% and 97% for 1helmet, 1helmet+luggage, 2helmet settings respectively
the calibration is only there to determine the "max" number and then zero position.. from there the ZFE uses these values and reference to wind the preload to the required number of pulses for 3% 50% or 97% , depending on what setting you chose on your handlebar switch
best,
Stephan
best,
Stephan
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