Issue: My front derailleur won’t shift . The FD just makes a repetitive five-click sound but doesn’t move .
What’s odd is my Garmin also suddenly showed the right shifter battery as critically low , even though the right shifter works fine and the problem is on the left/front shift side .
I swapped the coin cell batteries left to right and now both show good battery levels , so it doesn’t seem battery-related. In Synchro, a front shift command still moves the rear derailleur one cog , so some signal is clearly getting through.
Was about to reply to your original post, but you beat me to it.
In the off chance that this had not been previously considered, have you charged the main Di2 battery? The one that most often sits in the seat tube. Di2 prioritises rear shifting ability, so as the main battery runs flat, you’ll start seeing the FD slowly becoming increasingly unresponsive.
Another symptom of a soon to be flat main battery is the rear derailleur remaining functional (while the FD doesn’t).
If the system turns off FD shifting due to a detected low battery, it won’t attempt to shift the FD which seems to be with which the clicking is associated. It sounds a bit like a problem with the FD.
* Edit: Looks like you’ve tried getting into the FD via the e-tube app. Were you able to see the FD on the app? Were you able to get the Maintenance > Front Derailleur adjustment function to work? As in, the system shifts the FD, while you rotated the crankarms.
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In that case, have you tried accessing the drivetrain via the e-tube app to see if it’s detectable? That would show that the system recognises the FD in the 1st instance.
I’d also give a go to the Maintenance > Front Derailleur adjustment function. Not so much to realign things, but to see if the system is able to shift the FD at all.
Another thing I’d try is to swap ports on the main battery. Assuming your bike was configured for semi-wireless operation, that should be 1 vacant port available. Trace the cable that’s connected to the FD at the battery end, and move it to the vacant port and see if that helps.
yup, tried all that. It recognises the FD. But when I try to make an adjustment I get the clicking sound followed by a "“an error occurred programming” message.
I couldn’t say with any certainty but by example I cut open a rear mech recently and found the motor mount screws had loosened. This will look good electronically- everything ostensibly works - but obviously it won’t engage properly and you can get the clicking type of outcome as here. The shop won’t likely try and fix it - they’ll just sell you a replacement.
The error message reported by @Aussie_Rider could be firmware related. On a few occasions, when attempting to remedy a corrupted firmware on a component, I’ve come across the same message as well.
If this is the case, the bike shop should be able to sort out the issue, since they’d likely have one of those PCE02 PC adapter things used for diagnostics and to rectify corrupted firmware.
I have an R8150 Ultegra that just started having similar issue a couple weeks ago in front derailleur. Tried most of the same stuff as you…batteries were good etc.
Took it to my LBS and immediately they said “servo motor is fried and you need a new one”. They’ve had a few people with this issue recently…unfortunately for me it was out of the 2 year Shimano warranty by almost 2 years and I’m shelling out for a replacement. Hopefully you’ll be luckier than me!
There’s something off about that FD. The shift from large > small ring seems to be a little more snappy than normal, which might point to a fault within the servo/motor mechanism. Hard to tell, without having the actual device in my hands.
For reference, this is what the FD of an R9250 sounds like. The R8150 should not sound too far off from this one.