C2417 on 2017-2022 Hyundai Ioniq — Hill Start Assist System Fault
1 vehicles · 1 makes · $400-$1,400 repair
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Hyundai Ioniq · 2017–2022
The Hyundai Ioniq's electronic parking brake (EPB) and Auto Hold feature can malfunction randomly, illuminating the EPB warning light and disabling the Auto Hold function. Hyundai TSB 23-BR-001H covers EPB codes C2416 (left) and C2417 (right), 'Motor Short or Open', which are repaired with an EPB ECU software update or a revised EPB extension wiring harness at the rear brake. When the EPB faults, the Auto Hold feature (which automatically holds the brake at stops) also becomes unavailable, turning orange on the dashboard. The issue can be intermittent and difficult for dealers to reproduce, as the fault codes may not store permanently.
Common Symptoms
- Electronic Parking Brake warning light illuminates randomly
- Auto Hold indicator turns orange and feature is disabled
- EPB fails to engage when shifting to Park
- Grinding or clicking noise from rear brakes when EPB activates
- Smart Cruise Control becomes unavailable when EPB faults
How to Fix
Visit a Hyundai dealer and request a scan for codes C2416/C2417. If present, the dealer should follow TSB 23-BR-001H, which calls for an EPB ECU software update (TSB 21-BR-004H) or replacement of the EPB extension wiring harness on the affected side only. The dealer can also perform an EPB service mode reset after replacement. If the issue is intermittent and no codes are stored, ask the dealer to note the complaint in the service record for warranty tracking. The EPB calipers and motors are covered under the factory warranty.
Call to confirm they can assess your vehicle and perform the stated work. Search results do not confirm qualification, eligibility or coverage.
Owner tips & cautions
- TipIf the EPB warning comes on intermittently, take a photo or video of the dashboard every time it happens. The dealer needs evidence that the issue is recurring if they cannot reproduce it during the service visit. Date-stamped photos strengthen your warranty claim.
Sources for this issue (4)
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C2417 code reference
General diagnostic-code context. The code alone does not confirm a cause for your vehicle; use the applicable issue card and its sources.
Frequently asked questions
What does C2417 mean?
C2417 stands for "Hill Start Assist System Fault." C2417 is a chassis code that the provided definition lists as a Hill Start Assist (hill-hold) system fault, a feature that briefly holds the brakes when you start off on an incline so the car doesn't roll back. The control module sets this code when it detects a problem within the hill-start-assist function or a related input it relies on, such as brake-pressure, incline, or wheel-speed data. You will typically see a warning message and lose the hill-hold feature, though normal braking still works. Note this is a manufacturer-specific code whose exact meaning and triggering component can vary by make, so the stored definition should be confirmed against the vehicle's service data.
What are the most common causes of C2417?
The most common causes of C2417 are: Fault or stored codes in the ABS/stability control module (shares the function), Faulty brake pressure or master cylinder pressure sensor, Inclination/yaw or accelerometer sensor fault, Wheel speed sensor signal problem, Brake pedal or brake light switch fault, Damaged wiring or connectors in the brake control system, Low brake fluid or hydraulic/electronic actuator issue. The specific cause varies by vehicle.
How much does it cost to fix C2417?
Repair costs for C2417 range from $400 to $1,400, depending on the vehicle and root cause.
Which vehicles are affected by C2417?
Au7o has documented C2417 across 1 vehicle models from 1 manufacturers: Hyundai.
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Content compiled with AI assistance using NHTSA complaints, TSBs, and owner reports. May contain errors. Always verify with your vehicle's service manual.