Component Inspection
1.CHECK MIRROR SWITCH & CHANGEOVER SWITCH
1. Turn ignition switch OFF.
2. Disconnect door mirror remote control switch connector.
3. Check door mirror remote control switch.

Is the inspection result normal?
YES >> Inspection end.
NO >> Replace door mirror remote control switch. Refer to MIR "Removal and Installation".
SYMPTOM DIAGNOSIS
Recommended fluids/lubricants and capacities
The following are approximate capacities. The actual refill capacities may
be a little different. When refilling, follow the procedure
described in the "Do-it-yourself" section to determine the proper refill
capacity.
...
U0300 Can communication data
Description
The amount of data transmitted from each control unit is read.
DTC Logic
DTC DETECTION LOGIC
DTC
Trouble diagnosis name
DTC detection condition
Possible causes
U0300
Internal Control Module Software
Incompatibility
When the amount of data transmitt ...