Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
Diagnosis System
- DIAGNOSIS
- If the skid control ECU detects a malfunction, the ABS/BRAKE warning lights and SLIP/CRAWL indicator lights and/or "Check VSC System" on the multi-information display will come on to warn the driver.
The table below indicates which lights will come on when there is a malfunction in a particular function.
Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
TROUBLESHOOTING CHARTItem/Trouble Area Multi-terrain ABS BA EBD VSC A-TRAC CRAWL Hill-start Assist Control ABS Warning Light ◦ ◦ ◦ - - - - BRAKE Warning Light - - ◦ - - - - Check VSC System - - - • • • • SLIP Indicator Light - - - ◦ ◦ ◦ ◦ CRAWL Indicator Light - - - - - • (During CRAWL control operation) - ◦: Light on •: Light on (Blinking) -: Light off
- The DTCs are simultaneously stored in memory. The DTCs can be read by connecting SST between terminals 13 (TC) and 4 (CG) of the DLC3 and observing the blinking of the ABS warning light, or by connecting the Techstream.
- This system has a signal check function (test mode).
- If the skid control ECU detects a malfunction, the ABS/BRAKE warning lights and SLIP/CRAWL indicator lights and/or "Check VSC System" on the multi-information display will come on to warn the driver.
- WARNING LIGHT AND INDICATOR LIGHT CHECK
- Release the parking brake lever.NOTE: When releasing the parking brake, set chocks to hold the vehicle for safety.
HINT:
When the parking brake is applied or the level of the brake fluid is low, the BRAKE warning light comes on.
- When the engine switch is turned on (IG), check that the ABS and BRAKE warning lights and the VSC OFF, SLIP and CRAWL indicator lights turn on and then turn off after the engine starts.
If a light remains on, proceed to troubleshooting for the light circuit below.
TROUBLESHOOTING CHARTTrouble Area See Procedure ABS warning light circuit ABS WARNING LIGHT REMAINS ON BRAKE warning light circuit BRAKE WARNING LIGHT REMAINS ON VSC OFF indicator light circuit VSC OFF INDICATOR LIGHT REMAINS ON SLIP indicator light circuit SLIP INDICATOR LIGHT REMAINS ON CRAWL indicator light circuit CRAWL INDICATOR LIGHT REMAINS ON
- Release the parking brake lever.
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.
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