Bosch Active line ECU? Where is is?

mrgeoff

Pedelecer
Mar 12, 2015
45
15
54
UK
Hi, where is the memory or ECU part of the Bosch setup? Like what part contains all the diagnostics info that the dealers plug into?
I was wondering which parts of the system I can change, without needing to goto a dealer to plug in a computer for setup.
I guessing the battery has its own diagnostic memory to know the amount of charges, and swapping batterys is no issue, so what part contains the rest of the info? Can you swap out motors or displays?

Thanks - Geoff.
 

Andy-Mat

Esteemed Pedelecer
Oct 26, 2018
2,214
562
78
Hi, where is the memory or ECU part of the Bosch setup? Like what part contains all the diagnostics info that the dealers plug into?
I was wondering which parts of the system I can change, without needing to goto a dealer to plug in a computer for setup.
I guessing the battery has its own diagnostic memory to know the amount of charges, and swapping batterys is no issue, so what part contains the rest of the info? Can you swap out motors or displays?

Thanks - Geoff.
I have never owned anything from Bosch myself, but if you research on Pedelec, you will find out that to preclude any DIY repairs, which Bosch views as illegal, with or without any guarantee, Bosch uses CAN-BUS data lines to make sure that you cannot even swap out a battery without their sayso and your money is required to pay for all repairs, once the guarantee is used up, as they do not sell parts to private owners..
Recently someone posted here that if your Bosch motor get problems, to get a repaired replacement will cost about 800 UK Pounds. I do not remember if that included the work or not, sorry.
If you wish to be allowed to make changes and repairs, and if I also believe the knowledgeable people who post here on Pedelec, you had better pick a different make....a front or a rear hub only....
Tip, do not pick any mid motor e-bike, as they all suffer from the "single point of failure" (as do the Bosch offerings), which is because the bike chain and its supporting components, handle ALL motor power and ALL muscle power, it all goes through this single piece of chain and gears, causing not only extra wear and tear, but also preventing you riding home if the chain , or one of the other components breaks!
Whereas with a cheap and cheerful hub motor e-bike (around the price of a Bosch motor replacement!), if the chain breaks, you can usually get home, if the battery still has power, just by pedalling to enable the PAS, or by using the throttle if one is fitted, as most of the cheapers systems do not actually check if the chain is "working and in place" or not!
Regards
Andy
PS. The people who have been (I feel criminally) caught out with a middle motor e-bike, especially the Bosch ones, really hate anyone like myself mentioning the failings of such bikes publically! Its as if they really want others to get caught out just as they were....Wait up!
 
  • Like
Reactions: mike killay

sjpt

Esteemed Pedelecer
Jun 8, 2018
3,832
2,756
Winchester
Bosch repairs can be very expensive (and slow). You do need to replace the chain more often on mid-motor ebikes.

All bikes have several single points of failure; I've never seen evidence that breaking a properly maintained chain on a mid-motor bike is that high on the list.
 

vfr400

Esteemed Pedelecer
Jun 12, 2011
9,822
3,993
Basildon
Hi, where is the memory or ECU part of the Bosch setup? Like what part contains all the diagnostics info that the dealers plug into?
I was wondering which parts of the system I can change, without needing to goto a dealer to plug in a computer for setup.
I guessing the battery has its own diagnostic memory to know the amount of charges, and swapping batterys is no issue, so what part contains the rest of the info? Can you swap out motors or displays?

Thanks - Geoff.
You can replace the battery or the LCD. The battery has its own memory regarding charges that shows up when you put it on the Bosch battery tester. The main info is stored on the main pcb in the motor.
 

mrgeoff

Pedelecer
Mar 12, 2015
45
15
54
UK
OK, if its in the Motor thats fine thanks.
Was fairly sure the battery was independant, as lots of people have 2 batts to swap round.

On the subject of chains, I beat up on my bike, sometimes lube it when it gets squeaky, cleaned maybe 3 times in its life, and the original chain did me 2,000 miles, I only replaced it when I felt the chain tensioner had gone a bit far...!!
 

Amoto65

Esteemed Pedelecer
Jul 2, 2017
807
502
61
Cheshire
On the subject of chains, I beat up on my bike, sometimes lube it when it gets squeaky, cleaned maybe 3 times in its life, and the original chain did me 2,000 miles, I only replaced it when I felt the chain tensioner had gone a bit far...!!
Never had one fail in over 50 years of riding motorbikes and bikes it is a bit of an old wives tale.
 

vfr400

Esteemed Pedelecer
Jun 12, 2011
9,822
3,993
Basildon
Never had one fail in over 50 years of riding motorbikes and bikes it is a bit of an old wives tale.
I've had one bicycle chain (wife's bike) and two motorbike chains snap while riding. I used to do 40,000 miles a year on motorbikes over a period of about 10 years.
 

georgehenry

Esteemed Pedelecer
Nov 7, 2015
1,446
1,264
Surrey
I have had two chains break on my Haibike Yamaha crank drive and one on my old Oxygen rear hub bike, so it can happen.

With the right tools it is reasonably simple to connect a broken chain back together to get you home.

My old rear hub bike due to its age has a unrestricted throttle, so that does give you another way of carrying on without a chain.
 
  • Like
Reactions: MontyPAS

stevenatleven

Pedelecer
Apr 18, 2011
212
140
Fife
I have never owned anything from Bosch myself, but if you research on Pedelec, you will find out that to preclude any DIY repairs, which Bosch views as illegal, with or without any guarantee, Bosch uses CAN-BUS data lines to make sure that you cannot even swap out a battery without their sayso and your money is required to pay for all repairs, once the guarantee is used up, as they do not sell parts to private owners..
Recently someone posted here that if your Bosch motor get problems, to get a repaired replacement will cost about 800 UK Pounds. I do not remember if that included the work or not, sorry.
If you wish to be allowed to make changes and repairs, and if I also believe the knowledgeable people who post here on Pedelec, you had better pick a different make....a front or a rear hub only....
Tip, do not pick any mid motor e-bike, as they all suffer from the "single point of failure" (as do the Bosch offerings), which is because the bike chain and its supporting components, handle ALL motor power and ALL muscle power, it all goes through this single piece of chain and gears, causing not only extra wear and tear, but also preventing you riding home if the chain , or one of the other components breaks!
Whereas with a cheap and cheerful hub motor e-bike (around the price of a Bosch motor replacement!), if the chain breaks, you can usually get home, if the battery still has power, just by pedalling to enable the PAS, or by using the throttle if one is fitted, as most of the cheapers systems do not actually check if the chain is "working and in place" or not!
Regards
Andy
PS. The people who have been (I feel criminally) caught out with a middle motor e-bike, especially the Bosch ones, really hate anyone like myself mentioning the failings of such bikes publically! Its as if they really want others to get caught out just as they were....Wait up!
Andy I would like to take this opportunity to thank you for your unstinting diligence in repeating the mid drive warnings, esp Bosch. Unfortunately its came to late for me.
I am one of the fools who has spent thousands of pounds on a succession of Bosch powered e bikes over the years. In spite of the fact I have done thousands of miles on them and even enjoyed a few continental tours I can't shake the feeling of imminent failure of the the motor or chain or god forbid both. Its got to the stage where it keeps me awake some nights now.
I am considering therapy for the insomnia and may even consider going back to hub drives to get a good nights sleep. Keep up the good work.
 

sjpt

Esteemed Pedelecer
Jun 8, 2018
3,832
2,756
Winchester
Concern for motor failure seems very reasonable. However, as long as you maintain the chain properly and replace when it stretches significantly I think the risk of chain failure is very low.
 

Andy-Mat

Esteemed Pedelecer
Oct 26, 2018
2,214
562
78
Andy I would like to take this opportunity to thank you for your unstinting diligence in repeating the mid drive warnings, esp Bosch. Unfortunately its came to late for me.
I am one of the fools who has spent thousands of pounds on a succession of Bosch powered e bikes over the years. In spite of the fact I have done thousands of miles on them and even enjoyed a few continental tours I can't shake the feeling of imminent failure of the the motor or chain or god forbid both. Its got to the stage where it keeps me awake some nights now.
I am considering therapy for the insomnia and may even consider going back to hub drives to get a good nights sleep. Keep up the good work.
We all here have seen too many people who have spent big money on Bosch e-bikes, and nobody, least of all me, believe that a problem happens to each and every bike, of course it doesn't.
Some Bosch Bikes actually work as they should do, surprisingly! Some people get lucky....
But any bike, used a lot suffers when a there is a lack of spares for private people, unable to buy the parts from Bosch (and lets face it, even some LBS's cannot get spares from Bosch either!), expensive (Still Chinese manufacture, not German!!) motors, that may only be replaced by a workshop at huge costs, and only last a week or two, slow repairs, REALLY expensive repairs that break again sometimes only hours later, the CAN-BUS data lines linking up parts and checking for (in Bosch's view) illegal Dongles, and shutting down the electronics, if the firmware "thinks" that there might be a problem!
We have read about them all here on Pedelec, its not a secret, that the list of problems with Bosch e-bikes is very long and extensive, even if it only happens to some, its still a huge burden for those who get them......
I, and others here, would not be doing a good job for our future and present fellow members, looking for help and assistance, if we did not remind all here of the possible problems. Again and again.....
We all see the new member standard post on Pedelec:- I bought an ***** e-bike and it's now giving problems, what should I do.......
It happens so often, and of course they bought a bike new or secondhand, in good faith, paid good money, and shortly afterwards they get HUGE problems.
Would it not be great to help them all BEFORE they get stuck with an expensive piece of crap.....whether its mid or hub motor.....
Anyone not agreeing with full details and disclosure, right up front, is not being very kind to those people, in my view.
I really wonder exactly why so many Bosch owners, having read about all the problems some others experience, trust themselves to every say anything positive, that they have experienced, and apparently would be more than happy if I and some others here, quietly forgot about the Bosch crap.....and never mentioned it again!
Well that is NOT happening on my watch!
But each to his own.
Andy
 
  • Like
Reactions: stevenatleven

Amoto65

Esteemed Pedelecer
Jul 2, 2017
807
502
61
Cheshire
We all here have seen too many people who have spent big money on Bosch e-bikes, and nobody, least of all me, believe that a problem happens to each and every bike, of course it doesn't.
Some Bosch Bikes actually work as they should do, surprisingly! Some people get lucky....
But any bike, used a lot suffers when a there is a lack of spares for private people, unable to buy the parts from Bosch (and lets face it, even some LBS's cannot get spares from Bosch either!), expensive (Still Chinese manufacture, not German!!) motors, that may only be replaced by a workshop at huge costs, and only last a week or two, slow repairs, REALLY expensive repairs that break again sometimes only hours later, the CAN-BUS data lines linking up parts and checking for (in Bosch's view) illegal Dongles, and shutting down the electronics, if the firmware "thinks" that there might be a problem!
We have read about them all here on Pedelec, its not a secret, that the list of problems with Bosch e-bikes is very long and extensive, even if it only happens to some, its still a huge burden for those who get them......
I, and others here, would not be doing a good job for our future and present fellow members, looking for help and assistance, if we did not remind all here of the possible problems. Again and again.....
We all see the new member standard post on Pedelec:- I bought an ***** e-bike and it's now giving problems, what should I do.......
It happens so often, and of course they bought a bike new or secondhand, in good faith, paid good money, and shortly afterwards they get HUGE problems.
Would it not be great to help them all BEFORE they get stuck with an expensive piece of crap.....whether its mid or hub motor.....
Anyone not agreeing with full details and disclosure, right up front, is not being very kind to those people, in my view.
I really wonder exactly why so many Bosch owners, having read about all the problems some others experience, trust themselves to every say anything positive, that they have experienced, and apparently would be more than happy if I and some others here, quietly forgot about the Bosch crap.....and never mentioned it again!
Well that is NOT happening on my watch!
But each to his own.
Andy
And breath.......
 

mrgeoff

Pedelecer
Mar 12, 2015
45
15
54
UK
I will keep my Bosch mid motor running as long as I can. After 5 years HARD use and zero maintinance, it needs a bit of love currently, I would have considered a brand new one again, but as I like travelling round my country estate at 22mph, Bosch have stopped my buying a new one with the anti-dongle nonsense.
Otherwise, love it, you couldnt say anything to convince me otherwise even with a 250 quid bill looming to replace all the bearings in it.
 
  • Like
Reactions: stevenatleven

Nealh

Esteemed Pedelecer
Aug 7, 2014
20,917
8,533
61
West Sx RH
For the average user Mid drives likely present no issues as most are likely very fair weather or very infrequent riders likely will only ride a 100 miles or so a year,
 
  • :D
Reactions: stevenatleven

Gringo

Esteemed Pedelecer
Jun 18, 2013
1,346
842
Northampton
For the average user Mid drives likely present no issues as most are likely very fair weather or very infrequent riders likely will only ride a 100 miles or so a year,
I’m an average mid drive rider,
average heigh,
average weight,
average shoe size
and i average about 2000 miles a year (rain or shine)
 
  • Agree
Reactions: sjpt

sjpt

Esteemed Pedelecer
Jun 8, 2018
3,832
2,756
Winchester
I’m an average mid drive rider,
average height,
average weight,
average shoe size
and i average about 2000 miles a year (rain or shine)
I agree. A little more weight than I should have. A bit under 1000 a year on the Bosch solo (mainly me but also my wife) and a bit under 1000 a year on the front hub drive tandem. Though very difficult to know about 'average'; 100 a year would be closer for our next door neighbour (who is 86).
 

Nealh

Esteemed Pedelecer
Aug 7, 2014
20,917
8,533
61
West Sx RH
Those of us who post and use this site are above the average user I believe and are a dedicated loyal ebike bunch, your average man women on the street I doubt would ever use a forum like this. Now and then I see the odd small group riding on a nice day (fair weather riders), these I think may represent more the average very little use owner I speak of rather then the more dedicated that use the forum.
 

vfr400

Esteemed Pedelecer
Jun 12, 2011
9,822
3,993
Basildon
I’m an average mid drive rider,
average heigh,
average weight,
average shoe size
and i average about 2000 miles a year (rain or shine)
The question is whether you are an average ebike user though. Let's say that you were an average person all round. That would mean that you have an IQ of only 100.5 if you live in England or Wales, or, even worse, 97 if you live in Scotland, and if you're over 81.16 years old, you're already dead.