What Happens If The Controller on an Electric Bike Breaks?

30 April 2025

The controller is a very important component on an electric bicycle or e-moped.

Its main function is to regulate the flow of electrical power from the battery to be distributed to various other electrical components in the e-moped.

When the controller experiences problems, an ECU icon will appear on the speedometer display.

Common symptoms that occur are that the throttle does not work and the wheels do not turn even though the unit is on.

In general, if the ECU icon appears on the speedometer, the main cause is a damaged controller, so the handling is to replace the damaged controller with a new controller.

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More FAQ

Checking The Electric Bike When First Received

Checking the Condition of the E-Moped Unit• Open the cover, then remove the wrapping from the entire body of the e-moped unit.• Check the condition of the e-moped body. Make sure the condition of the e-moped is in good condition, there is no damage whatsoever.• Make sure the completeness of the e-Moped unit accessories such as charger, key and keyless remote, mirror, basket and manual book are available in full.• Activate the MCB located under the rear seat to start the engine, by pressing the MCB lever to the ON position.• After the MCB is active, start the engine with the available e-moped key or using the Keyless System remote.• Make sure the speedometer is on and displays all the existing feature icons.• Install the mirror, basket, back rest and pedals to complement the appearance of the e-moped.Checking the E-Moped Charger• Make sure the MCB on the e-moped unit is in the ON position when charging.• Pay attention to the color of the lights on the charger.• When the charger is connected to the wall socket, the light will turn red, and the charger is in the charging process.• When the battery is full, the light will change from red to green....

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How to Install an Electric Bike Battery: 2-Row Battery Position

Before installing the battery, check the completeness of the existing battery set.On electric bicycles that have 4 batteries, the battery set is equipped with 8 bolts and 3 red battery cables that have different colored cable ends, namely black and red.To start the installation, open the battery compartment cover bolts on the lower deck using a screwdriver.Place all batteries in the compartment.Mark the battery position as shown in the picture.Start the battery cable installation series by installing the first cable with the red end on the red terminal on battery number one.Then connect the black end of the cable to the blue terminal on battery number two.Next, install the second cable with the red end on the red terminal on battery number two and the black end on the blue terminal on battery number three.Install the third cable with the red end on the red terminal on battery number four, and connect the black end of the cable to the blue terminal on battery number one.The cable installation pattern in the example is a reference for the recommended cable layout.Finally, attach the two types of power cables connected in the compartment to the remaining battery terminals, namely the red power cable to the red terminal on battery number three, and the black power cable to the blue battery terminal on battery number four.Tighten with the existing bolts using a screwdriver.Make sure the battery installation is properly installed before closing the compartment.Close the compartment cover tightly again and tighten the bolts using a screwdriver.After the lower deck is neatly closed, turn on the MCB located under the rear seat to activate the electric bicycle unit....

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How to Install an Electric Bike Battery: Line-up Position

Before installing the battery, check the completeness of the existing battery set.On E-Mopeds that have 4 batteries, the battery set is equipped with 8 bolts and 3 red battery cables that have different colored cable ends, namely black and red.To start the installation, open the battery compartment cover bolts on the lower deck using a screwdriver.Start installing the battery by placing the first battery into the compartment, then attach the cable with the red end to the battery terminal which is also red.Lock the cable with a bolt using a screwdriver.Then place the next battery parallel to the first battery.After all the batteries are installed in the compartment, start attaching the cable with the black end to the blue battery terminal and the red end to the red battery terminal, then continue the pattern to each existing battery.Please note that for one battery cable, both ends must be attached to two different batteries, so that all the existing cables connect the installed battery circuit.Next, attach the two types of power cables connected in the compartment to the remaining battery terminals, namely the red power cable to the red terminal, and the black power cable to the black battery terminal.Tighten with the existing bolts using a screwdriver.Make sure the battery installation is properly installed before closing the compartment.Close the compartment cover tightly again and tighten the bolts using a screwdriver.After the lower deck is neatly closed, turn on the MCB located under the rear seat to activate the e-moped unit....

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What Happens If an Electric Bike Engine Has Problems?

Problems with E-Moped Enginesi. If there are problems with the e-moped engine, an M icon will appear on the speedometer.ii. A common symptom that occurs is that the e-moped wheels do not rotate when the throttle is gassed while the unit is on.Checking for Problems with the Motor Enginei. The first step, open the body cover where the controller is located. On some other types, the controller position is under the rear seat.ii. Check the condition of the motor cable socket connected to the controller whether it is loose or not. If it is loose, tighten it by pressing the socket until it is locked properly and not loose.iii. Next, open the bolt cover on the controller to check the condition of the 3 bolts in the top position that are connected to the green, blue and yellow cables. If there are loose bolts, tighten them using a screwdriver.iv. If the cable and socket have been checked but the motor still does not turn on, then it is necessary to replace the new motor engine set....

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What Happens If the Alarm Module on an E-Bike is Broken?

When the alarm module is damaged, a constant alarm sound will occur and the unit cannot be turned on if using the Keyless Remote.The way to check is to check the performance of the existing alarm module set.Open the back seat, then check the alarm module set in the form of a black box.In the alarm module set there are cables, alarm sockets and speakers in the box.As a first step, pay attention to the cable connections and alarm sockets that are connected to the controller cable.Immediately tighten if anything is loose or not connected properly.Check the condition of the alarm module if there are indications of a short circuit, such as a burnt alarm cable or speaker.If the alarm module is found to be short-circuited, it is advisable to immediately replace the alarm module with a new one....

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What Happens If the Battery on an Electric Bike Has Problems?

When the battery on the e-moped is damaged, the unit will be in a condition where it cannot be turned on or completely dead.As an initial step in checking it, connect the unit to a charger that is connected to a power outlet.Then turn on the MCB by pressing the lever to the ON position.If the unit turns on and the electricity works properly when the charger is connected, then it can be analyzed that the damage is in the battery installation.Next, check the battery in the lower deck of the e-moped.Check the existing cable installation, whether it is loose or not.If there are any loose bolts, tighten them using a screwdriver.Make sure the battery cable installation is properly installed.If the cable installation is confirmed to be properly installed but the e-moped engine is still not working, then the solution is to replace the damaged battery with a new battery....

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