Shimano EP8 error E0010 - can I service the motor myself on my Merida e160?

[Brads8]

Hey, shimano ep8
Fault code e 0 10 can you strip
Service the motor? Is there a
Spare parts kit ?

I ride a Merida e160.

 

[Greg Watts]

Hey, shimano ep8 Fault code e 0 10 can you strip Service the motor? Is there a Spare parts kit ? I ride a Merida e160.

Welcome to the forum, @Brads8. Right, the E010 on a Shimano EP8. Not the most cheerful welcome to your Sunday afternoon. E010 is the most common Shimano EP8 error code and indicates an abnormality detected in the drive unit.

The frustrating part is that it's a catch-all. On the German eMTB forums, it's widely reported that E010 typically appears alongside warning W013 and relates to the torque sensor inside the motor, not the speed sensor.

The pattern is classic: it starts as an intermittent fault that clears with a battery off/on cycle, then gradually becomes persistent until it won't clear at all.

Before you assume the worst, try the basics. Remove the battery, leave it out for 30 minutes, clean the battery contacts and all visible connectors, refit and power on.

There's also a reported fix floating around involving using the Stunlocker app to change the chainring teeth number in the motor configuration and then changing it back to the original size, which supposedly resets something internally. Worth a go before spending money.

Now, to your actual question about stripping and servicing it yourself. The honest answer is: Shimano really didn't design the EP8 to be owner-serviceable.

It doesn't look like they intended it to be serviceable at all, and you'd need to de-solder the controller board just to access the rotor bearings.

 

[steve_sordy]

@Brads8 I had an e010 error code when pressing the power on button. Unfortunately on that occasion, one of the pedals was braced against a workstand. That contact was applying torque to the crank which was detected resulting in the erro code.

I switched off the motor and left the bike for a few minutes before trying again. Result! and huge relief! I was expecting a major problem.

It never happened again because I ensured that the cause was avoided from then on.

Maybe I was just lucky. Because your post implies that you probably tried what I did and still have problems. Or have you left the bike alone since you got the code and sought counsel? In whuch case, try switching thr bike on again, ensuring no pedal or crank contact with anything.

 

[Brads8]

Welcome to the forum, @Brads8. Right, the E010 on a Shimano EP8. Not the most cheerful welcome to your Sunday afternoon. E010 is the most common Shimano EP8 error code and indicates an abnormality detected in the drive unit.

The frustrating part is that it's a catch-all. On the German eMTB forums, it's widely reported that E010 typically appears alongside warning W013 and relates to the torque sensor inside the motor, not the speed sensor.

The pattern is classic: it starts as an intermittent fault that clears with a battery off/on cycle, then gradually becomes persistent until it won't clear at all.

Before you assume the worst, try the basics. Remove the battery, leave it out for 30 minutes, clean the battery contacts and all visible connectors, refit and power on.

There's also a reported fix floating around involving using the Stunlocker app to change the chainring teeth number in the motor configuration and then changing it back to the original size, which supposedly resets something internally. Worth a go before spending money.

Now, to your actual question about stripping and servicing it yourself. The honest answer is: Shimano really didn't design the EP8 to be owner-serviceable.

It doesn't look like they intended it to be serviceable at all, and you'd need to de-solder the controller board just to access the rotor bearings.

Thanks Greg do you know if you can have the motor repaired by a dealer or is it a new motor ? Thanks Pete

 

[Brads8]

@Brads8 I had an e010 error code when pressing the power on button. Unfortunately on that occasion, one of the pedals was braced against a workstand. That contact was applying torque to the crank which was detected resulting in the erro code.

I switched off the motor and left the bike for a few minutes before trying again. Result! and huge relief! I was expecting a major problem.

It never happened again because I ensured that the cause was avoided from then on.

Maybe I was just lucky. Because your post implies that you probably tried what I did and still have problems. Or have you left the bike alone since you got the code and sought counsel? In whuch case, try switching thr bike on again, ensuring no pedal or crank contact with anything.

Thanks the rotor code has been intermittent the last few rides where I have switched it off & on to clear. Now it just comes on as you switch the power on for the battery power??? Thanks

 

[Greg Watts]

Thanks Greg do you know if you can have the motor repaired by a dealer or is it a new motor ? Thanks Pete

@Brads8 - the short answer is: if it's a sensor fault, it's almost certainly a new motor rather than a repair. None of the internal sensors can be replaced as individual components, so regardless of which one has failed, you need a new drive unit.

Now, before you reach for the credit card: when one forum member's motor died, their local Shimano Service Centre contacted Madison and arranged an "assisted purchase," meaning they got a new motor considerably cheaper than list price.

That's the route worth pursuing first. Madison can be generous with out-of-warranty replacements - but if you've been running any tweaked settings via something like the Stunlocker app, put everything back to stock before you take it in.

Also worth noting: a UK specialist called eBike Motor Centre in the New Forest does EP8 overhauls and bearing replacements, and there's also E-Motor Repairs who offer Shimano diagnostics and strip-down services. Neither can fix a torque sensor fault (that's a factory-calibrated assembly), but they're worth a call to confirm exactly what's wrong before committing to a full replacement.

First stop though: a Shimano-authorised dealer who can run the official diagnostic and talk to Madison on your behalf. That "assisted purchase" option is real money saved.

 

[Brads8]

@Brads8 - the short answer is: if it's a sensor fault, it's almost certainly a new motor rather than a repair. None of the internal sensors can be replaced as individual components, so regardless of which one has failed, you need a new drive unit.

Now, before you reach for the credit card: when one forum member's motor died, their local Shimano Service Centre contacted Madison and arranged an "assisted purchase," meaning they got a new motor considerably cheaper than list price.

That's the route worth pursuing first. Madison can be generous with out-of-warranty replacements - but if you've been running any tweaked settings via something like the Stunlocker app, put everything back to stock before you take it in.

Also worth noting: a UK specialist called eBike Motor Centre in the New Forest does EP8 overhauls and bearing replacements, and there's also E-Motor Repairs who offer Shimano diagnostics and strip-down services. Neither can fix a torque sensor fault (that's a factory-calibrated assembly), but they're worth a call to confirm exactly what's wrong before committing to a full replacement.

First stop though: a Shimano-authorised dealer who can run the official diagnostic and talk to Madison on your behalf. That "assisted purchase" option is real money saved.

Thanks really good advice

 

[Greg Watts]

Thanks really good advice

Cheers, @Brads8. Glad it was useful. I see you've had a look at the E-Motor Repairs site too. They're a solid option for getting a proper diagnosis before committing to anything expensive. Their initial inspection is £45, which is worth it just to confirm whether it's the torque sensor or something else entirely. If it is the torque sensor, even they can't fix that (it's a factory-calibrated assembly), but at least you'll know for certain what you're dealing with.

Worth checking your Merida's warranty status first though, as they only work on motors over two years old and out of warranty. If yours is still covered, the Shimano dealer route via Madison is the better play financially.

Good luck with it, and let us know how you get on.