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.
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HOMESERVICE MANUALSHYUNDAI2017SANTA FE SE, FWDREPAIR AND DIAGNOSIS (SINGLE PAGE)ACCESSORIES & EQUIPMENTDRIVERS ASSISTANCE SYSTEMS - ADASBLIND SPOT DETECTION DIAGNOSIS - RIGHTDTC C170C-04: ECU HARDWARE ERROR (REAR RIGHT)DTC INSPECTIONMONITOR GDS DATA
2017 Hyundai Santa Fe SE, FWD
Monitor GDS Data
2017 Hyundai Santa Fe SE, FWDSECTION Monitor GDS Data
- Connect GDS to Data Link Connector (DLC).
- IG key "ON", Engine "ON".
- Monitor diagnostic trouble code and present of trouble code.
- Are any DTCs present?
Using a GDS, Check if the same DTC re-sets after clearing DTC.
- Is the same DTC detected again?
YES
- Substitute with a known-good "BSD ECU (RH)" and check for proper operation. If the problem is corrected, replace "BSD ECU (RH)" and then go to "VERIFICATION OF VEHICLE REPAIR " procedure.
NO
- Go to "VERIFICATION OF VEHICLE REPAIR " procedure.
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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.