se7en
Registered user
Well the servo/abs was fine whilst it was working…. (2005 1150 GSA SE 16k)
…. and fecking scary when it failed filtering through Cambridge city centre rush hour
As others have said, “residual braking” is as much use as a chocolate teapot - I had to Fred-Flintstone-my-way to a standstill. Doesn’t take much imagination to think of other scenarios with worse outcomes.
The warning lights had come on mid-ride and came back soon after ignition off/restart, but the servo was still working – right up to the point it didn’t.
Next day start up self-test also failed but the servo was now kicking in occasionally
Need the fault codes checked – never used Motoscot before but he’s pretty local and Steve said he’d read them if I dropped by.
Ignition on, self test fine, servo working normally front and rear
Brakes worked perfectly all the way and no fault codes showed on the 911 diagnostic 
System and brakes checked out fine. Asked Steve to change the brake fluid anyway - part way through bleeding it the servo went haywire. Nothing, front only, rear only, stayed on, nothing. Microswitches, fluids, battery voltage etc all ok. We concluded it was a terminal mental breakdown (the servo/abs, not mine).
Although Steve hunted down a low mileage servo/abs unit off an 850 it wasn’t “recognised” by my ECU (850/1150 use the same servo/abs but it turns out the factory “burn” the unit’s electronics so it only works in one or the other….).
So, megabucks for a new servo/abs unit or a servoectomy? No contest.
Now got a straightforward reliable braking system with just as much power but heaps more feel. And no electronic nanny that shuts itself down when it feels like it. Shame about the abs though.
Thanks to Steve (Motoscot) and Laura for being incredibly helpful. Great price too. Top people
…. and fecking scary when it failed filtering through Cambridge city centre rush hour
As others have said, “residual braking” is as much use as a chocolate teapot - I had to Fred-Flintstone-my-way to a standstill. Doesn’t take much imagination to think of other scenarios with worse outcomes.
The warning lights had come on mid-ride and came back soon after ignition off/restart, but the servo was still working – right up to the point it didn’t.
Next day start up self-test also failed but the servo was now kicking in occasionally
Need the fault codes checked – never used Motoscot before but he’s pretty local and Steve said he’d read them if I dropped by.Ignition on, self test fine, servo working normally front and rear
Brakes worked perfectly all the way and no fault codes showed on the 911 diagnostic System and brakes checked out fine. Asked Steve to change the brake fluid anyway - part way through bleeding it the servo went haywire. Nothing, front only, rear only, stayed on, nothing. Microswitches, fluids, battery voltage etc all ok. We concluded it was a terminal mental breakdown (the servo/abs, not mine).
Although Steve hunted down a low mileage servo/abs unit off an 850 it wasn’t “recognised” by my ECU (850/1150 use the same servo/abs but it turns out the factory “burn” the unit’s electronics so it only works in one or the other….).
So, megabucks for a new servo/abs unit or a servoectomy? No contest.
Now got a straightforward reliable braking system with just as much power but heaps more feel. And no electronic nanny that shuts itself down when it feels like it. Shame about the abs though.
Thanks to Steve (Motoscot) and Laura for being incredibly helpful. Great price too. Top people
