Xiaomi scooters are one of the most popular means of transportation in the city, but even with reliable models such as the one that is not. M365, Pro 2, 3 or 4, The gas handle (accelerator) is one of the most vulnerable parts: it is susceptible to mechanical damage, moisture and just wear from active use. If you notice that the scooter twitches when dialing speed, does not respond to the turn of the handle or gives an error E014/E015, It is likely that the problem is in this node.
Removing the gas handle on Xiaomi Scooter is a task that even a beginner can handle if approached carefully. However, there are pitfalls, from improperly turning off the wires to damaging the plastic housing during disassembly. In this article, we will analyze the step-by-step dismantling process taking into account the features of different models, list the necessary tools and warn about typical errors that can lead to a failure of the controller or display.
Important: if your scooter is warranty, self-repair can cancel it, in which case you should contact the Xiaomi service center, but if the warranty period has expired or you are willing to risk it, then we will!
What tools will be needed to remove the gas handle
Before you start dismantling, prepare everything you need, and not even one tool can complicate the process or damage parts.
- π§ Cross screwdriver (preferably magnetic so as not to lose small screws). PH2.
- π¨ Flat screwdriver or plastic mediator for slapping latches.
- π₯ Hair dryer construction (optional, if the glue on the handle is too strong).
- π§² Tweezers for working with small wires and contacts.
- πΈ Smartphone for photographing the process (useful when reassembling).
- π§΄ Alcohol or isopropyl alcohol for cleaning contacts (if the handle is faulty due to oxidation).
- π Multimeter (to check the integrity of the wires and the resistance of the gas handle).
For models Xiaomi Pro 2 and newer may additionally require a torx screwdriver T8 β Some of the screws in these versions have a custom head. Also prepare a heat shrink tube or tape if you plan to solder wires.
β οΈ Warning: Do not use metal tools to tamper with plastic latches - this can leave scratches or chips.
Preparation of the scooter for disassembly: safety steps
Before you can get into electronics, you need to turn off the scooter and lock it in a stable position, and neglecting these rules can lead to a short circuit or accidental start of the engine.
Here's what we need to do:
- Turn off the scooter with a long press on the power button (5 seconds).
- Unplug the battery (if the model allows) to do this, remove the bottom cover of the case and turn off the battery connector. M365 and pro 1 It is easier than on the Pro. 2/3, where it may be necessary to remove the platform.
- Hold the steering wheel upright so it doesn't scroll, you can use screeds or improvised tools.
- Work with gloves if your hands are sweaty, it will save electronics from static electricity.
On models Xiaomi with a system KERS (And when you shut down the battery, you can have an alarm, and that's okay, when you plug in the battery, it's back to its original state.
Step-by-step: how to remove the handle of gas
Now, the instructions are universal for most Xiaomi models, but we will point out the nuances for specific versions.
Step 1: Dismantling the steering wheel
The gas handle is attached to the steering wheel, so you need to take the steering wheel off first.
- Unscrew four screws at the junction of the steering wheel and the base (they are hidden under rubber plugs).
- Carefully pull the steering wheel upwards, it should be removed from the slits. If it is tight, do not apply force: spray the joint. WD-40 and wait 5-10 minutes.
- Put the steering wheel aside, don't pull the wires!
On Xiaomi Pro 2 and newer steering wheel can be additionally fixed with a plastic latch - it must be squeezed with a flat screwdriver.
Step 2: Removal of the plastic casing
The gas handle is hidden under a plastic casing that is attached to the latches and sometimes to the glue to remove it.
- π Find two latches on the sides of the casing (they are usually marked with triangular marks).
- π± Tap them with a plastic spatula, starting at the bottom.
- π₯ If the casing does not lend itself, warm it with a hair dryer (temperature not higher than 60).Β°C) to soften the glue.
Be careful: on the Xiaomi 4 Series, the casing can be especially tightly glued β donβt try to tear it off by force, otherwise there will be traces.
Step 3: Unconnecting the wires
Under the casing you will see three wires running from the gas handle to the controller:
- Red is food (+5V).
- Black is land (GND).
- Green/Yellow β signal wire (analog or digital depending on the model).
Carefully unplug the connector by pulling the plastic lock. Don't pull the wires! If the connector doesn't move, check if there's an extra latch on the side.
Battery's off.|The location of the wires is photographed|Tools at hand|No wire tension.-->
Step 4: Removing the gas handle
Now the gas handle is held by only two screws (on some models, one screw and a latch), unscrew them and carefully pull the handle out of the seat, if it's tight, check if the wire is disturbing.
Xiaomi. M365 and Pro 1 handle can be additionally fixed with a rubber seal - it must be screwdriver.
What do I do if the pen is boiling?
Typical Problems and How to Avoid Them
Even with careful disassembly, you can encounter surprises, and here are the most common mistakes and ways to prevent them:
| Problem. | Reason. | Decision |
|---|---|---|
| The scooter does not turn on after assembly | Incorrectly connected wires or damaged connector | Check the polarity and integrity of the contacts with a multimeter |
| The gas handle is working in jerks. | Oxidation of contacts or damage to potentiometer | Clean the contacts with alcohol or replace the handle |
| There's a bug on the display. E014 | Breaking of signal wire or short circuit | Call the wires, if necessary, weld. |
| The steering wheel scrolls after assembly | The steering screws are not tightened. | Tighten the screws cross-cross with a force of 2-3 NΒ·m |
If after assembly the scooter makes an error E015, This could mean that the controller is malfunctioning, and in this case, the gas handle needs to be checked with a multimeter:
- π Measure the resistance between the red and black wires β it should be 5 KOM M365) or 6.8 KOM (for Pro) 2/3).
- π Scroll the pen and watch for the change in resistance - it should change smoothly from 0.5 kOhm to 4.5 kOhm.
β οΈ Note: If resistance is surge or absent, the gas handle is faulty and must be replaced.Pattempting to repair a faulty throttle can lead to unpredictable acceleration, which is dangerous.
How to check the gas handle without a multimeter
Not everyone has a multimeter on hand, but you can check the pen's performance in other ways.
Method 1: Visual examination
Examine the pen for the subject:
- π Cracks on the body β they may indicate mechanical damage.
- π§ Traces of moisture or corrosion on contacts.
- π Burned or blackened areas on the board.
- π Luft in the axis of rotation - if the handle dangles, the potentiometer is worn out.
If any of these signs are present, it is better to replace the pen.
Method 2: Connecting to another scooter
If you have access to another Xiaomi Scooter of the same model, you can temporarily plug a suspicious gas handle into it:
- Turn off the handle on the working scooter.
- Connect the pen under test, observing polarity.
- Turn on the scooter and check the reaction to turn the handle.
If the problems recur (trucks, no reaction), the handle is faulty. If everything is working normally, the problem is in the controller or wiring of your scooter.
π‘
Before buying a new gas pen, check its compatibility with your Xiaomi model. M365 Pro 2 is similar in appearance, but have different connectors and resistance.
Replacement of the gas handle: what you need to know
If the old pen is not repairable, it will have to be replaced.
Choosing a new pen
Gas handles for Xiaomi are of two types:
- π Analog (potentiometer) - used in M365, Pro 1.
- πΆ Digital (hall sensor) β stand on Pro 2, 3, 4.
Make sure the new pen is compatible with your model, for example, a digital pen cannot be installed on your model. M365 controllerless.
Installation and calibration
After the replacement, the handle may need to calibrate:
- Put the battery on.
- Turn on the scooter and wait for initialization.
- Turn the gas handle to the stop and hold for 5 seconds.
- Put the pen back in its original position.
At Xiaomi Pro. 2/3 calibration can be performed automatically on first switching on.
β οΈ Warning: If the scooter accelerates spontaneously or does not brake after changing the handle, immediately turn it off.
Cleaning and prevention: how to prolong the life of a gas handle
To make the gas handle last longer, follow these recommendations:
- πΏ Avoid driving in the rain β moisture leads to corrosion of contacts.
- π§΄ Clean the handle of dirt and sweat regularly (wet wipes can be used).
- π Do not hold the pen in the extreme position for more than 10 seconds - it can damage the potentiometer.
- π οΈ Check the handle mounting once every 3 months - weakened screws lead to backlash.
If you often drive on dusty roads, you can additionally protect the handle with a silicone case or wrap it with tape at the junction with the steering wheel.
π‘
The most common cause of failure of the gas handle is moisture. Even after a little rain, it is recommended to dry the scooter in a warm place for 2-3 hours.