RE: ESA faults

R1200RS + R1250RS Forum � 1200 RS technology � Tyres, Brakes and Suspension � ESA faults

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#16 | RE: ESA faults datum

Tue Mar 30, 2021 4:24 pm

The only problem with the ESA system that I have on my April 2015-build RE was when it wouldn't operate the preload apparatus. I found that by pulling the wire connector to the shock and spraying some contact cleaner into it then reconnecting it, the device started working again. Since then I had my dealer take a look and they downloaded the latest ESA firmware, which did nothing to improve the shock's damping, but since then I have not had any more preload adjustment failures.

Current motorcycle collection: 2002 Yamaha FZ1; 2020 KTM 390 Duke; 2011 Royal Enfield Bullet 500; 2009 BMW F650GS; 2016 BMW R1200RS; 2018 Zero S 16.6 kWh

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#17 | RE: ESA faults datum

Tue Mar 30, 2021 6:50 pm (Last edited: Tue Mar 30, 2021 6:51 pm)

Zitat von PJM38 im Beitrag #15
Hi Mr. 36654,
XSAF : Fabrication date and software last update (YY / MM / DD) : 16/09/06.

My 2016 RS was produced in March 2016. Everything was great until last spring when I had a series of throttle faults which resulted in "Limp Mode" operation. All connections were checked and cleaned, but didn't prevent the random fault. I returned the motorcycle for service and the latest software package was downloaded. The problem has been cured for 6,000-miles. However, the throttle response is slightly different.

In my "unlearned" opinion, these faults are arising from the "adaptive" nature of the software. Eventually, enough data bits have been digested by the software that the simple algorithms have shifted "normal" to the safety limits of the individual control modules.

Good luck.

Old Forum Orphan

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#18 | RE: ESA faults datum

Thu Apr 01, 2021 5:50 pm

Thanks for your advice. I couln't go further without discussing with my BMW dealer. I will have some informations for argue with the chief mechanical. I will keep you informed of the rest of this story.

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#19 | RE: ESA faults datum

Mon Apr 05, 2021 11:33 am

Hello,

I continued the diagnosis regarding my ESA fault problem. I used the real time reading of the ESA parameters given by the GS911. I simulated the oscillations in the road by unplugging the rear level sensor control lever and applying oscillations to it by hand. The results are in the table below. I was able to reproduce the fault very regularly. This only appears in two helmets mode by applying small oscillations to the level sensor. It is interesting to see how the D-ESA system works. Depending on the preload and the mode, the damping is set to a larger or smaller base value. The softer with 1 helmets and Road mode, the hardest with 2 helmets in dynamic mode. In road mode, depending on the oscillations of the road, the suspension temporarily hardens and then returns to its basic value. In dynamic mode, there is no modification of the damping, at least as a function of the level sensor oscillations. Regarding my ESA fault problem, I conclude that it is definitely not a bad contact problem, that it is probably not a problem with the damper and its valve. It is therefore a problem with the ESA box or another electronic module. I ordered a used ESA module with the same Hardware and Software version given by the GS911 (HW1.0.1 and SW 1.19.2). Continuation in a few days.

D-ESA Trials.JPG - Bild entfernt (keine Rechte)

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