uncrx2003

I recently bought a BMC SLR01 with Ui2. I love the shifting. After 6 rides so far, it has quit working on me 3 times during the ride. The first time it happened, I got stuck in the big chainring but fortunately it was stuck on 17-18 rear cog. I was able to mash 30 miles home. It wasn't any fun at all. Both shifters failed and I had no idea how to make it work again. Took it to the lbs. They messed around with it and it worked again. Happened again on a second ride and again tonight. This time I took the battery out and re-installed it. Fortunately, it worked so I made it home ok. Has anyone has this issue? This shouldn't happen this frequently especially on a brand new bike. What suggestions would you make? Thanks

gc3

my guess (emphasis on wild ass guess) is bad install...take it back again to the LBS where you bought it and make them rebuild it from scratch..

uncrx2003

Yeah, something is not right with the install I think. I'm going to contact the service tech at CC tomorrow to see what they say. I think I need to ship it back to them. I know several people with Ui2 and they said it has been flawless. So irritating.

Bah Humbug

As I recall, it's possible for the cable that goes into the shifters to be slightly knocked loose. I'd take a good look at those and make sure they're firmly inserted and connected.

grolby

It's not "Ui2."

R1lee

Correct, but there are companies like specialize that call it ui2.

ruindd

I'd check all of your connections. It's pretty unlikely that you have a bad part. Are all of your connections solid? I'd disconnect ever junction (use the included tool) and make sure all the connections are clean (blow some air in there or something) and firmly reconnect. I'm sure the CC guys will take care of you though, i've had nothing but stellar service from them.

knowledgdropper

Correct, but it's not "specialize".

dtrain

Joshua Tree was nearly perfect! Bono is a bit much at times.

Campag4life

Likely a electrical breach in the harness.
If you really want to find out what is going on...you have to really drill down on your local bike shop.
Ask them what diagnostic steps they have taken. Have they run the codes for the system.
I personally would want to know the codes and insist they remove the wire harness and replace it.
Also, go over the the current active thread on the 41 and tell them that Di2 is unreliable...kidding.
Good luck. Find out exactly what your lbs has done to resolve your issue.

bonz50

lol, that would be epic.

M_Wales

Great Album!!

AMFJ

Taking a guess, but his LBS will likely tell him to take his drilling to CC where he bought it, or charge him by the hour plus a kicker for being "drilled" to go through a bike he bought over the internet. If they go by the hour, I wouldn't expect them to operate in a hurry after being "drilled" by someone.

Campag4life

You missed construed the term drilling down. Its a journalism term that went over your head. Drilling down means to get all the details. It isn't perjorative. Its about fact finding and not intimidation. The OP has to ask what exactly the lbs did to assess the system failure. For example if the lbs didn't run any codes, then the lbs didn't do their job. If the OP doesn't know this he can't formulate an action plan to resolve his issue. Wiggling wires to get it back working isn't acceptable. There maybe a continuity breach internal to the harness which can only be resolved by replacement.

roadwarrior

No batteries required...

Campag4life

hehehe. Gotta love it.

bsektzer

It definitely sounds like loose connections somewhere in the wiring harness. I had similar issues with the Ultegra Di2 group I installed myself until I first made absolutely sure all connections were solidly clicked into place using the provided tool, and (this is the part that gets missed) a little bit of slack is left in each cable just before it's connection. Failure to do that last step will often lead to a situation where everything is fine until you center punch a bad pothole or the frame takes some other kind of shock that causes taut wires to pull otherwise solid connections loose.

AMFJ

I think it went over your head, that if you don't know how to fix it yourself, and you start making someone go over tiny details about what they did and why they did it---on a bike bought from an internet store, they are very likely to tell you to head for the street.


Beyond that, what does making a bike shop employee give you a 30 minute lesson on what they did going to do? If he didn't know enough to fix it himself, is he even going to understand that? Further, every good mechanic I know (car and bike) do things to fix issues that they can't put into words. They just go into "auto" mode when fixing items based on their experience. Your suggestion is awesome on the internet. In the real world, it's an internet suggestion.

RT

A cable in a cable-less system. This is madness

uncrx2003

The lbs is going to run diagnostic on it today. Hopefully they find out what's wrong with it.

Looigi

Had a friend with the same issues. I believe it was a connector that wasn't properly or fully mated.

Campag4life

Were you a crack baby?

gc3

I have no friends.

aramis

I bought the same bike. The way they zip tied the junction box for the shifters up front allows for the cable to come loose from it which would cause the shifters to obviously not work. Once it looked like it was connected but it wasn't fully seated.

Cut the zip ties to the junction box from the brake cable and re-zip tie it more loosely or electrical tape it or something and you shouldn't have any other problems. The installation was really clean on mine, just that one spot needs to be fixed.

Bah Humbug

And Orbea calls it Li2.

Personally, I think Ui2 is a perfectly useful thing to call it. It's clear and much shorter than Ultegra Di2. What's wrong with an abbreviation?

I mean, "brifter" isn't a word either, but it's much nicer than "integrated brake and shift lever".