DTC Advanced Diagnostics: C0049-7B
DTC C0049-7B: Brake Fluid Level Too Low
NOTE
Initial Diagnosis:
The initial on-board diagnosis occurs right after the vehicle condition is turned to the ON mode, and the ABS/VSA indicator comes on, and continues until the indicator goes off.
Regular Diagnosis:
The regular on-board diagnosis begins right after the ABS/VSA indicator goes off, and it continues until the vehicle condition is turned to the OFF (LOCK) mode.
Review "How to troubleshoot the VSA system" before doing the DTC troubleshooting procedure.
Test-drive the vehicle according to local traffic conditions and regulations. Do not test-drive on a lift unless specified.
The possible causes shown may not be a complete list of all potential problems, and it is possible that there may be other causes.

Confirmation Procedure
Basic Condition:
12 volt battery voltage 9.6 - 16.5 V

With the Driving Pattern:
1.
Turn the vehicle to the ON mode.
2.
Wait 60 seconds or more.
Execution
Regular Diagnosis
Duration
About 60 seconds
DTC Type
1 drive cycle
Brake system indicator (amber) on
VSA indicator on
Fail Safe Action
Degrade ABS performance
Stop engine drag torque control function
Stop TCS function
Stop VSA function
Stop agile handling assist function
Stop brake assist function
Stop hydraulic boost failure compensation function
Stop hill start assist function
Stop automatic brake hold function
Stop ACC function*
Stop CMBS function*
Possible Cause
Short to ground between the gauge control module and the brake fluid level switch (BRAKE LEVEL SW line)
Low brake fluid level
Brake fluid level switch failure
Gauge control module internal failure
VSA modulator-control unit internal failure
*: With ACC