BMW C 400 X User Manual

take over and even the
BMW Motorrad ABS is unable to
counteract their effects.
Automatic Stability
Control (ASC)
How does ASC work?
BMW Motorrad ASC compares
the wheel speeds of the front
and rear wheels. Differences in
the relative rotation speeds al-
low the system to determine the
slip rate, and thus the stability re-
serves at the rear wheel. The en-
gine management system adapts
the engine torque when the slip
limit is exceeded.
Special situations
As lean angles increase, accel-
eration potential is also progres-
sively restricted by the laws of
physics. This can result in de-
layed acceleration when coming
out of very tight curves.
The system compares the rota-
tion speeds of the front and rear
wheels to detect any tendency
for the rear wheel to spin or lose
traction. If the system registers
implausible data for an extended
period of time it will deactivate
the ASC functionality as safety
precaution and a display will alert
you to an ASC error. A self-diag-
nosis routine must be completed
before the error will be displayed.
If the front wheel loses contact
to the ground during extreme
acceleration, the ASC reduces
the engine torque until the front
wheel touches the ground again.
BMW Motorrad recommends
that you respond to this condi-
tion by twisting back the throttle
grip somewhat to return to stable
dynamic operating conditions as
quickly as possible.
Never abruptly turn the throttle
grip all the way back while on a
smooth road surface. The en-
gine's braking torque could cause
the rear wheel to lock, resulting
in unstable motorcycle condi-
tions. This case cannot be con-
trolled by BMW Motorrad ASC.
Slippery roadway
On very loose surfaces (e.g. a
gravel bed at a racetrack) the
control interventions of the ASC
can reduce the drive force at
the rear wheel to such a degree
that the rear wheel no longer
turns sufficiently. In this case,
BMW Motorrad recommends
switching off the ASC temporar-
ily.
Note that the rear wheel will spin
on the loose surface, and close
the throttle in a timely manner
before reaching a solid surface.
Then switch on ASC again.
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z Technology in detail
https://www.motorcycle-manual.com/

BMW C 400 X Specifications

General

Displacement	350 cc
Transmission	CVT
Fuel System	Electronic Fuel Injection
Front Suspension	Telescopic fork
Front Brake	Single disc, 265 mm
Rear Brake	Single disc, 265 mm
ABS	Standard
Front Tire	120/70 R15
Rear Tire	150/70 R14
Seat Height	775 mm
Fuel Capacity	12.8 liters
Width	835 mm
Engine Type	Single-cylinder, four-stroke
Max Power	34 hp (25 kW) @ 7, 500 rpm
Max Torque	35 Nm
Rear Suspension	Double swingarm
Weight	204 kg
Length	2, 210 mm
Height	1, 305 mm
Wheelbase	1, 565 mm

Summary

General instructions

Overviews

Displays

Serious fault in the engine control

ABS fault

ASC intervention

Operation

Steering and ignition lock

Instructions for locking the handlebars and operating the ignition switch.

Ignition with Keyless Ride

Details on operating the ignition system using the Keyless Ride feature.

Heated grips

Instructions for operating the heated grips for rider comfort.

EWS Electronic immobilizer

Battery of the key fob transmitter is empty or the key fob transmitter is lost

Replacing the battery of the key fob transmitter

Step-by-step guide for replacing the battery in the key fob transmitter.

TFT display

Principle

Explanation of operating elements and functions controlled by the Multi-Controller.

Onboard computer with connectivity

Bluetooth

Bluetooth pairing

Procedure for linking Bluetooth devices, including conditions and steps.

My Vehicle

Media

Controlling music playback

Instructions for controlling music playback using the motorcycle controls.

Making a phone call

Alarm system

Overview

General information about the anti-theft alarm system (DWA).

Activation

Steps for activating the anti-theft alarm system.

Alarm function

Details on how the alarm function is triggered and its signals.

Setting

Spring preload

Guidance on setting the spring preload based on load.

Adjusting the spring preload on the rear wheel

Riding

Safety information

Essential safety precautions for the rider, including clothing and load.

Observe checklist

Pre-ride checklist to ensure the motorcycle is ready for operation.

Starting

Instructions for starting the engine and the Pre-Ride-Check procedure.

Parking the Scooter

Instructions for parking the scooter using side stand and center stand.

Refueling

Detailed steps for refueling the motorcycle, including fuel type and capacity.

Burn hazard

Modifications

Pre-Ride-Check

ABS self-diagnosis

ABS self-diagnosis completed

ASC self-diagnosis

How do you achieve the shortest stopping distances?

Poorer braking action due to moisture and dirt

Fuel is highly flammable

Technology in detail

Antilock Brake System (ABS)

Explanation of how the ABS system works and its design features.

Automatic Stability Control (ASC)

Explanation of how the ASC system works and its special situations.

What happens when rough roads are encountered?

How important is regular maintenance?

Brake system not regularly serviced

Reserves for safety

Slippery roadway

Maintenance

Front wheel stand

Instructions on how to mount the front wheel stand.

Engine oil

Checking the engine oil level

Procedure for checking the engine oil level using the dipstick.

Brake system

Check brake operation

How to check the brake levers for proper operation and pressure points.

Checking the front brake pad thickness

Guide for visually inspecting the thickness of the front brake pads.

Checking the rear brake pad thickness

Checking brake fluid level of the front wheel brake

Coolant

Checking the coolant level

Procedure for checking the coolant level in the expansion tank.

Tires

Checking the tire pressure

Instructions for checking tire pressure for front and rear wheels.

Rims and tires

Check tire tread depth

Wheels

Tire recommendation

Information on BMW Motorrad tested and approved tire makes.

Influence of the wheel sizes on the ABS

Effect of wheel sizes on the ASC

Removing front wheel

Installing the front wheel

Removing rear wheel

Fuses

Battery

Maintenance instructions

Jump-starting

ATTENTION

ATTENTION

Commercially available chargers connected to the onboard socket.

Incorrect battery connection

Charging a disconnected battery

Removing the battery carrier

Removing battery

Installing the battery carrier

Fairings and panels

Data link connector

Removing the diagnostic connector

Accessories

General notes

General information and cautions regarding the use of accessories.

Power socket

Topcase

Navigation system

Guidance on installing and operating the navigation system.

Operating the navigation system.

Mediaplayer

Care

Care products

Washing your motorcycle

Cleaning sensitive motorcycle parts

Technical data

Troubleshooting chart

Guide to diagnosing and resolving common issues with the motorcycle.

Screw connections

Fuel

Engine oil

Engine

Chassis and suspension

Brakes

Technical details of the front and rear brake systems.

Wheels and tires

Electrical system

Alarm system

Keyless Ride

ASC intervenes without it being necessary, too often or too early.

Possible cause

Service

Reporting safety defects

Procedure for reporting safety defects to NHTSA and BMW.

BMW Motorrad Service

Information on BMW Motorrad's global service network and retailer expertise.

BMW Motorrad Mobility Services

Maintenance procedures

Maintenance schedule

Recommended schedule for all maintenance services.

Maintenance confirmations

BMW Running-in Check

BMW Service

Appendix