Hyundai Transmission Speed Sensor Recall: Comprehensive Guide for Affected Owners
Several Hyundai models manufactured between 2010-2017 may experience transmission speed sensor failures leading to inaccurate speedometer readings and diagnostic trouble codes. This detailed guide covers everything owners need to know about the service campaign, including affected vehicles, symptoms, warranty repairs, and how to get your vehicle fixed at no cost.
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Recognizing Speed Sensor Failure Symptoms
Vehicles with faulty input or output speed sensors typically display one or more of these warning signs:
- Erratic speedometer readings (needle jumps or shows incorrect speed)
- Illuminated check engine light with transmission-related codes:
- P0717 - Input/Turbine Speed Sensor Circuit No Signal
- P0721 - Output Speed Sensor Circuit Range/Performance
- P0722 - Output Speed Sensor Circuit No Signal
- Transmission shifting problems or delayed gear engagement
- Reduced fuel efficiency due to improper shift timing
- Possible activation of limp mode (transmission locks in a single gear)
Complete List of Affected Hyundai Models
The following vehicles equipped with automatic transmissions may require speed sensor replacement under this service campaign:
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Passenger Cars
- 2012 Hyundai Accent
- 2011-2012 Hyundai Azera
- 2011-2017 Hyundai Elantra (all body styles)
- 2013-2014 Hyundai Elantra Coupe
- 2013 Hyundai Elantra GT
- 2011-2015 Hyundai Sonata (including Hybrid models)
- 2016 Hyundai Sonata Hybrid
- 2013-2014 Hyundai Veloster
SUVs & Crossovers
- 2010-2013 Hyundai Santa Fe
- 2010-2015 Hyundai Tucson
Technical Service Bulletin Details
What Hyundai Owners Should Do Next
If your vehicle exhibits symptoms or appears on the affected models list, follow these steps:
- Verify your VIN's eligibility using Hyundai's recall lookup tool
- Contact an authorized Hyundai dealer to schedule diagnostic service
- Bring documentation including your vehicle registration and proof of ownership
- Request a repair verification report after service completion
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Need Immediate Assistance?
Hyundai Customer Service: 800-633-5151
NHTSA Vehicle Safety Hotline: 888-327-4236
Understanding the Importance of Speed Sensors
Transmission speed sensors play a critical role in your vehicle's operation:
- Input speed sensor monitors turbine shaft rotation to determine torque converter operation
- Output speed sensor measures transmission output shaft speed for gear ratio calculations
- Data from both sensors helps the transmission control module:
- Determine optimal shift points
- Calculate vehicle speed
- Regulate line pressure
- Enable torque converter clutch operation
Frequently Asked Questions
Is it safe to drive with a faulty speed sensor?
While the vehicle may remain operational, continued driving with speed sensor issues can lead to transmission damage and safety concerns due to inaccurate speed readings. We recommend prompt service.
How long do the replacement sensors last?
The updated sensors installed under this campaign feature improved durability and typically last the vehicle's lifetime under normal operating conditions.
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Will this repair affect my transmission's performance?
Properly functioning sensors will restore normal transmission operation and may improve shift quality and fuel efficiency in affected vehicles.
Additional Resources for Hyundai Owners
Stay informed about your vehicle's maintenance needs:
- NHTSA Recall Database - Check for all open recalls
- Hyundai Maintenance Schedules - Proper service intervals
- Transmission Care Guide - Extend your transmission's life
