Lack of information on Bosch motors after warranty runs out

Ivoivo1952

New Member
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United Kingdom
Hi new member here well not happy with what I found out yesterday. My trek powerflight 9 has developed a rumbling pedal shaft / bearing noise so I popped into th shop I purchased it from lark field cycles to see what it would cost to fix the problem. Well what a shock to find out that there is no chance of repair for the Bosch motor bearings . And the only option mentioned was buy another motor at a cost of about £800 . So for a bike that cost £4.5 k that’s done under2000 miles .what a rip off. There was no mention of that when I brought it. It’s six months outside the warrenty . Since then I have found out that I can repair it myself or get it done for £280 Ish . Surely the shop must know this ? . So I wish I hadn’t spent so much on my e bike if it means every 2000 miles I’ve got to go through a lot of effort to keep using it . So buyers beware .
 
Hi new member here well not happy with what I found out yesterday. My trek powerflight 9 has developed a rumbling pedal shaft / bearing noise so I popped into th shop I purchased it from lark field cycles to see what it would cost to fix the problem. Well what a shock to find out that there is no chance of repair for the Bosch motor bearings . And the only option mentioned was buy another motor at a cost of about £800 . So for a bike that cost £4.5 k that’s done under2000 miles .what a rip off. There was no mention of that when I brought it. It’s six months outside the warrenty . Since then I have found out that I can repair it myself or get it done for £280 Ish . Surely the shop must know this ? . So I wish I hadn’t spent so much on my e bike if it means every 2000 miles I’ve got to go through a lot of effort to keep using it . So buyers beware .
come on man,quit messin, your dealing with a LBS and Bosch so situations like yours are not even possible! This only happens when you buy "Chinese Junk" from one of those online companies!
 
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Happily riding with over 18000km on a Bosch CX.

What was the maintenance history on the motor?
 
No idea what maintenance is needed I was told it was a sealed unit don’t touch it ?
It is not a customer-serviceable part like a bicycle chain.

What I'd say is that if you purchased it from a Bosch-certified dealer they should have told you to have the bike checked out at about 500 miles, and depending on how hard you ride it and how awful conditions are where you ride, you should have had the dealer check it out periodically (you should ask them what the recommendations are) after that -- in any event at least once a year. The Bosch diagnostics that the dealers have is pretty good, and there was a possibility they could have caught the problem before the motor failed and fixed it within warranty.
 
come on man,quit messin, your dealing with a LBS and Bosch so situations like yours are not even possible! This only happen when you buy "Chinese Junk" from one of those online companies!
Sorry no idea what you mean?
It is not a customer-serviceable part like a bicycle chain.

What I'd say is that if you purchased it from a Bosch-certified dealer they should have told you to have the bike checked out at about 500 miles, and depending on how hard you ride it and how awful conditions are where you ride, you should have had the dealer check it out periodically (you should ask them what the recommendations are) after that -- in any event at least once a year. The Bosch diagnostics that the dealers have is pretty good, and there was a possibility they could have caught the problem before the motor failed and fixed it within warranty.
hi he is a Bosch certified dealer and no mention of service at any time . I will get onto that thanks .
 
If the people at Bosch had an intergrity or concern for the reputation of the company they would have replaced the motor. My brother had more tha 100,000 miles on his Toyota engine and the head gasket failed. Toyota provided him with a rebuilt engine and extended the warranty for an additional 10,000 miles.

The Bosch motor should not have failed with so few hours on it and Bosch knows this or they are happy to sell deficient products. With problems like this one, and there are other bike companies that do not cover their products. The problem with Bosch goes back to at least 2018 and it is high risk to buy a bike with a Bosch motor. Good news is that there are plenty of alternatives to Bosch for e-bikes.

It does beg the question as to how wise it is to put $5,000 or more into an e-bike considering the problems with durability of the drive units. With my regular road bikes I have put tens of thousands of troublefree miles on them. It puts e-bikes into the expensive toy category.
 
If the people at Bosch had an intergrity or concern for the reputation of the company they would have replaced the motor. My brother had more tha 100,000 miles on his Toyota engine and the head gasket failed. Toyota provided him with a rebuilt engine and extended the warranty for an additional 10,000 miles.

The Bosch motor should not have failed with so few hours on it and Bosch knows this or they are happy to sell deficient products. With problems like this one, and there are other bike companies that do not cover their products. The problem with Bosch goes back to at least 2018 and it is high risk to buy a bike with a Bosch motor. Good news is that there are plenty of alternatives to Bosch for e-bikes.

It does beg the question as to how wise it is to put $5,000 or more into an e-bike considering the problems with durability of the drive units. With my regular road bikes I have put tens of thousands of troublefree miles on them. It puts e-bikes into the expensive toy category.
Did the dealer actually contact the Bosch rep? Was the motor ever submerged or repeatedly ridden in driving rain? Carried on a car rack in driving rain? Washed a lot with a jet water nozzle on a hose? Go on youTube and watch the videos of service to Bosch motors. At least a couple shops show replacing bearings. I don't know where they are located by memory. Lots of Bosch haters, but I'm thrilled with my Bosch motors, I have 3. The oldest is a 2016MY and has 7,000+ miles on it. The first link is for bearings, and the second is their video on doing a Bosch repair.
 
My brother had more tha 100,000 miles on his Toyota engine and the head gasket failed. Toyota provided him with a rebuilt engine and extended the warranty for an additional 10,000 miles.

The Bosch motor should not have failed with so few hours on it and Bosch knows this or they are happy to sell deficient products. With problems like this one, and there are other bike companies that do not cover their products. The problem with Bosch goes back to at least 2018 and it is high risk to buy a bike with a Bosch motor. Good news is that there are plenty of alternatives to Bosch for e-bikes.

It does beg the question as to how wise it is to put $5,000 or more into an e-bike considering the problems with durability of the drive units. With my regular road bikes I have put tens of thousands of troublefree miles on them. It puts e-bikes into the expensive toy category.
Sorry, I don’t buy the Toyota story. I’ve had 20+ years of dealings with Toyota and they just don’t do things like that in my experience, unless they screwed up your brother‘s engine during a repair they were doing.
I certainly agree the Bosch shouldn’t have failed with so few hours. I certainly disagree that it’s “high risk” anymore than it is to buy a Specialized, Giant, etc. ebike.
Hello…Ebikes ARE an expensive toy, as are high-end analog bikes.
 
Hi new member here well not happy with what I found out yesterday. My trek powerflight 9 has developed a rumbling pedal shaft / bearing noise so I popped into th shop I purchased it from lark field cycles to see what it would cost to fix the problem. Well what a shock to find out that there is no chance of repair for the Bosch motor bearings . And the only option mentioned was buy another motor at a cost of about £800 . So for a bike that cost £4.5 k that’s done under2000 miles .what a rip off. There was no mention of that when I brought it. It’s six months outside the warrenty . Since then I have found out that I can repair it myself or get it done for £280 Ish . Surely the shop must know this ? . So I wish I hadn’t spent so much on my e bike if it means every 2000 miles I’ve got to go through a lot of effort to keep using it . So buyers beware .
Did you do any maintenance or bring it to your dealer for them to do any maintenance? What maintenance did you do or have done? Are you saying you did NOT know that ebikes require some effort on the part of the owner to maintain it? Are still riding it? Did you repair it yourself and if so what exactly was wrong with it? How much did it cost to repair?
 
If the people at Bosch had an intergrity or concern for the reputation of the company they would have replaced the motor. My brother had more tha 100,000 miles on his Toyota engine and the head gasket failed. Toyota provided him with a rebuilt engine and extended the warranty for an additional 10,000 miles.

The Bosch motor should not have failed with so few hours on it and Bosch knows this or they are happy to sell deficient products. With problems like this one, and there are other bike companies that do not cover their products. The problem with Bosch goes back to at least 2018 and it is high risk to buy a bike with a Bosch motor. Good news is that there are plenty of alternatives to Bosch for e-bikes.

It does beg the question as to how wise it is to put $5,000 or more into an e-bike considering the problems with durability of the drive units. With my regular road bikes I have put tens of thousands of troublefree miles on them. It puts e-bikes into the expensive toy category.
Hi everything you say is correct the main thing for me has been no information from the bike shop when I brought it about the fact that because there is so much torque put on the rear chain set they are prone to early failure. And that Bosch won’t fix a damaged motor . So anyone reading this steer clear of Bosch products. At least for e bikes .
 
Sadly like Apple products we’re denied the right to repair and access parts.
 
In Bosch's defense the OP is 6 months past his warranty and sometimes you just get a bad motor motor. My issue is how certain bike reviewers(not talking about EBR) make it seem as if Bosch will make it so much easier to have your bike serviced for years after its purchase when in reality its just the same old BS.
 
Did the dealer actually contact the Bosch rep? Was the motor ever submerged or repeatedly ridden in driving rain? Carried on a car rack in driving rain? Washed a lot with a jet water nozzle on a hose? Go on youTube and watch the videos of service to Bosch motors. At least a couple shops show replacing bearings. I don't know where they are located by memory. Lots of Bosch haters, but I'm thrilled with my Bosch motors, I have 3. The oldest is a 2016MY and has 7,000+ miles on it. The first link is for bearings, and the second is their video on doing a Bosch repair.
Poster Rich C nails it; asking great questions which the OP has failed to answer so far. So I too, will ask: did you ever submerge the motor? Ever clean it with high pressure water, including full blast from your garden hose nozzle?

As you are in the UK, you have the great resources of Performance Line Bearings, who can dissasemble your motor and replace the bearings and seals from within. I believe too, that Bosch has a repair kit available to rebuild the motor to a certain degree (not sure of internal circuit boards, though). I would make contact with Performance Line Bearings and have them evaluate and repair your motor.

Do let us know how this ends up for you.
 
Hi I never got it wet the problem is the bearings I have the contact details for bearing repair. Price is £270 . Then there’s the gear chain on the rear wheel to be sorted my guess is another few hundred pounds . So my e bike has not been good value for money .
 
...My issue is how certain bike reviewers(not talking about EBR) make it seem as if Bosch will make it so much easier to have your bike serviced for years after its purchase when in reality its just the same old BS.
+1
Has anyone replaced a Bosch motor by buying one in the aftermarket somehow?
The only Bosch motor replacements I've heard of have been warrantee replacements done by an official Bosch service place.
I have not heard of Bosch selling motors separately for upgrade or for home repair. When I hear how tight the control is on the software and system, I assume it's unlikely to happen, but please correct me if there is an aftermarket source for Bosch motors or motors made for a Bosch housing.

My Bosch Activeline Plus bike is going fine and still under warrantee, but I like the bike and I like the idea I could later replace the motor on this bike if/when the motor wears out. I like Bosch motors so that would be my first choice to replace it at some point.

If I can't replace a Bosch motor in the future, or only at some prohibitively expensive level, then it makes the bike seem disposable. At some point I'll have a nice bike with a Bosch-specific housing in the frame defining what motor it can have, but I'll have no motor for it.

A long time cyclist and someone experienced at building bicycles from parts, I'm used to being able to repair/replace stuff for bicycles which tend to last decades and decades, working as new if they get the right attention and upgrades when required. I realize an electric motor and its system work hard and wear out, likely at a faster rate than traditional bicycle parts, so needing to replace a motor at some point seems predictable. Maybe this is an issue across the emerging e-market; people buying ICE automobiles have always rightly assumed they can replace an auto's motor if needed (or just desired) at the dealer or in the aftermarket, but I doubt if they assume that when they buy cars with e-parts. No one pictures their Nissan Leaf in ten years and assumes they'll be able to take it to a garage and get a new motor(s) put in.

Maybe some e-bike riders are fairly new to bicycling, and perhaps many people already think of bicycles as disposable. They may not mind if the bike itself only has any value as long as that e-motor works(?). Hub motors and mid-drive kits seem relatively impervious to this problem. I was aware of those when I bought the Bosch bike but it didn't occur to me to wonder whether Bosch shared my motivation to keep my bike running long-term.
 
I believe you can replace a Bosch drive unit out of warranty through a dealer. Bosch won't sell directly to a consumer but they will to a dealer to replace a specific drive unit- I think the dealer has to register the serial number of the old DU and the new one with Bosch. You'd be on the hook for whatever labor the dealer wants to charge (also true under warranty, technically) in addition to the DU cost. I don't know that this is any different than Yamaha, Brose, or Shimano. I also wish the DU was user serviceable, but I knew going in that Bosch just replaces the DU and the dealers pretty much can't do anything other than clean and diagnose. It's a good thing that there are some aftermarket options now to service the bearings at least you have an option that is less than 1/2 the cost of replacing the unit.

As far as the concern about drivetrain and cassette wear, that has nothing to do with Bosch specifically. Every mid drive will have that consideration especially if you don't ease up while shifting or use high assist all the time. The OP's dealer should have done a better job educating them sure, but on the other hand I bet you could spend 10x as much buying a car with a stick shift and the dealer will probably assume you know how to operate it without burning up the clutch or motor.
 
I believe you can replace a Bosch drive unit out of warranty through a dealer. Bosch won't sell directly to a consumer but they will to a dealer to replace a specific drive unit- I think the dealer has to register the serial number of the old DU and the new one with Bosch. You'd be on the hook for whatever labor the dealer wants to charge (also true under warranty, technically) in addition to the DU cost. I don't know that this is any different than Yamaha, Brose, or Shimano. I also wish the DU was user serviceable, but I knew going in that Bosch just replaces the DU and the dealers pretty much can't do anything other than clean and diagnose. It's a good thing that there are some aftermarket options now to service the bearings at least you have an option that is less than 1/2 the cost of replacing the unit...

Then here is an opportunity for someone like Bafang to make a version of their mid-drive designed to fit a Bosch housing, or an adaptor for that. They could make them for Brose, Shimano, &Yamaha housings too, but should start with whichever has been selling long enough to have the most bikes out there in need of a new motor. This seems like such an obvious idea it's likely someone has made a Bafang-to-Bosch housing adaptor already(?). Maybe not.

It's the same market Bafang has been serving all along: conversions of existing bikes that have no motor. It's just these e-housing bikes won't have a BB shell and will need to bolt the motor onto something else.
 
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