Yamaha 2010 XMAX YP125R Service Manual page 461

Standard key is lost
All keys have been
lost (including code
re-registering key)
ECU is defective
Immobilizer unit is
defective
Main switch is defec-
tive
Accessory lock* is
defective
* Accessory locks mean the seat lock and fuel tank cap.
Code re-registering key registration:
When the immobilizer unit or ECU is replaced, the code re-registering key must be registered to the
unit.
To register a code re-registering key:
1. Turn the main switch to "ON" with the code re-registering key.
TIP
Check that the immobilizer system indicator light comes on for one second, then goes off. When the
immobilizer system indicator light goes off, the code re-registering key has been registered.
2. Check that the engine can be started.
3. Register the standard key, following the instructions in the section below.
Standby mode:
To enable the immobilizer system, turn the ignition key to "OFF". 30 seconds later, the indicator light
will start flashing continuously in the standby flashing mode pattern for up to 24 hours. After that time,
the indicator light will stop flashing, but the immobilizer system is still enabled.
Parts to be replaced
Main switch/immo-
bilizer unit
Main Immobiliz-
switch er unit
√
√
√
IMMOBILIZER SYSTEM
Accesso-
Standard
ECU
key
√
√ √
√
√ √
8-64
Key registration re-
quirement
ry lock*
and key
New standard key
Code re-registering
√
key and standard
keys
Code re-registering
key and standard
keys
Code re-registering
key and standard
keys
Code re-registering
√
key and standard
keys
√
Not required