The 2015 Elantra is a budget-friendly compact with two major fault zones: catastrophic engine failure on 2.0L models due to manufacturing defects, and a pattern of transmission oil cooler failures that can grenade the automatic if coolant cross-contaminates. The 1.8L is generally more stable but shares the cooler problem.
Catastrophic Engine Failure (2.0L Nu engine)
Occasional · high severity
Typical onset: 60,000-120,000 mi
Symptoms: Metallic knocking from crankcase, especially cold starts, Sudden oil pressure loss with no external leaks, Check engine light with bearing-related codes (P1326), Engine seizure without warning—often while driving
Fix: Complete short block or long block replacement; this is the recall-adjacent Theta/Nu bearing debris issue. Plan 12-16 hours labor for short block swap if caught early, but most grenaded engines need long blocks. Hyundai extended warranty to 10yr/100k for some VINs—check eligibility first.
Estimated cost: $4,500-7,500
Transmission Oil Cooler Failure
Common · high severity
Typical onset: 70,000-110,000 mi
Symptoms: Milky pink transmission fluid (coolant cross-contamination), Erratic shifting or slipping after cooler breach, Coolant loss with no visible external leaks, Transmission overheating warnings
Fix: Internal cooler in the radiator fails, allowing coolant into ATF. Requires radiator replacement, full trans flush minimum; if driven after contamination, trans rebuild or replacement adds 8-12 hours. Preventive external cooler install recommended at radiator swap—2 hours extra.
Estimated cost: $800-1,200 (cooler/rad only); $2,800-4,200 (if trans damaged)
Transmission Mount Failure
Common · medium severity
Typical onset: 80,000-130,000 mi
Symptoms: Clunking on acceleration or deceleration, Excessive vibration at idle in Drive, Visible engine/trans movement when switching from Park to Drive
Fix: Hydraulic transmission mount collapses; fluid leaks out and rubber tears. Replacement is straightforward—1.5 hours to support powertrain and swap mount. OEM recommended as aftermarket mounts fail quickly.
Estimated cost: $250-400
Ignition Coil Pack Failures
Common · medium severity
Typical onset: 60,000-100,000 mi
Symptoms: Misfire codes (P0301-P0304) often multiple cylinders, Rough idle and hesitation under load, Decreased fuel economy
Fix: Coil packs on both engines are weak; they often fail in pairs or sets. Replace all four with OEM or quality aftermarket (NGK/Delphi) at once to avoid comebacks. 1 hour labor including spark plug inspection.
Estimated cost: $350-550
Fuel Tank Vent Valve (PCSV) Failure
Occasional · low severity
Symptoms: Check engine light with P0441, P0455, P0456 (EVAP codes), Difficulty fueling—pump clicks off repeatedly, Fuel smell near rear of vehicle
Fix: Purge control solenoid valve sticks or the fuel tank pressure sensor fails. Diagnosis requires smoke test to rule out actual leaks. PCSV replacement is 0.8 hours; tank pressure sensor adds another 0.5 hours if accessed from top of tank.
Estimated cost: $200-350
Steering Coupler Wear
Occasional · medium severity
Typical onset: 90,000-140,000 mi
Symptoms: Clunking from steering column over bumps, Free play or looseness in steering wheel at center, Popping noise when turning at low speeds
Fix: Rubber joint in steering shaft coupling deteriorates. Requires disconnect of steering column and replacement of coupler assembly—2 hours labor. Safety concern if ignored as slop worsens.
Estimated cost: $300-450
Owner tips
Check VIN eligibility for Hyundai's extended engine warranty (Settlement 2.0L engines)—many qualify for free long block through 10yr/100k
Install external transmission cooler when replacing radiator—cheap insurance against $3k+ trans failure
Monitor oil consumption every 1,000 mi on 2.0L engines; sudden increase is early warning of bearing failure
Replace all ignition coils as a set at first failure to avoid repeat labor charges
Buy the 1.8L with service records and avoid the 2.0L unless the engine has already been replaced under warranty; budget $1,500/year for the cooler and mount issues even on good examples.
AI-assisted summary drawn from NHTSA recall data, our labor-times database, and platform knowledge. Not a substitute for a pre-purchase inspection on a specific vehicle.
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Control Modules — 2015 Hyundai Elantra
Every control module on the 2014-2016 Hyundai Elantra — where it lives, replacement time, and what it takes to program a replacement. Modules marked dealer / factory tool won't work after a part swap alone — budget for programming.
Motor Driven Power Steering Control Unit (MDPS)2.0 hr R&Raftermarket tool +0.3 hr▸ programming details
📍 Steering column, integrated with electric assist motor below instrument panel
🔧 Autel MaxiSys or Hyundai GDS
⚠️ Steering angle sensor calibration required. Flex-steer mode on Limited and Sport trims.
Anti-lock Brake System / Electronic Stability Control Module (ABS/ESC)1.5 hr R&Raftermarket tool +0.3 hr▸ programming details
📍 Engine compartment, driver side inner fender near strut tower
🔧 Autel MaxiSys or Hyundai GDS
⚠️ ESC standard all trims. Brake bleeding and steering angle sensor calibration required.
⚠️ External TCM on 6-speed automatic. Adaptive values reset required after replacement.
Telematics Control Unit / Blue Link Module (TCU)1.2 hr R&Rdealer / factory tool +0.5 hrLimited and Sport trims with Blue Link subscription▸ programming details
📍 Behind headliner, above rearview mirror
🔧 Hyundai GDS
⚠️ Requires dealer activation and subscription setup. VIN registration required.
Supplemental Restraint System Control Module / Airbag Control Unit (SRS/ACU)1.0 hr R&Raftermarket tool +0.2 hr▸ programming details
📍 Center console tunnel, below center stack behind trim panel
🔧 Autel MaxiSys or Hyundai GDS
⚠️ Crash data clearing required. Battery disconnect 3+ minutes before removal.
Engine Control Module / Powertrain Control Module (ECM/PCM)1.0 hr R&Rdealer / factory tool +0.5 hr▸ programming details
⚠️ Mileage programming required. VIN synchronization mandatory. 4.3-inch TFT display on Limited and Sport trims.
Audio Video Navigation Head Unit (AVN)0.6 hr R&Rno coding
📍 Center dash, double-DIN mounting location
⚠️ 7-inch or 8-inch touchscreen navigation on Limited and Sport. Standard audio is plug-and-play.
Rear View Camera Module (RVC)0.5 hr R&Rno codingLimited and Sport trims with navigation
📍 Integrated with trunk latch assembly
⚠️ Plug-and-play replacement. Camera calibration not required.
Tire Pressure Monitoring System Receiver (TPMS)0.5 hr R&Rrelearn only +0.2 hr▸ programming details
📍 Behind center console, near parking brake assembly
🔧 TPMS relearn tool or Autel
⚠️ Sensor ID relearn required. Can be performed with TPMS tool or drive procedure.
Aftermarket tool coverage varies by software version and vehicle build — treat "aftermarket tool" rows as "usually possible" and verify against your tool maker's coverage list before promising a customer. Spot a wrong location or hour? Tell us — corrections ship fast here.
AIR BAGS:FRONTAL:DRIVER SIDE:INFLATOR MODULE · 26V307000
2026-05-15 · EA16003
Hyundai Motor America (Hyundai) is recalling certain 2015-2016 Elantra and 2016 Elantra GT vehicles. The driver's air bag inflator may rupture during deployment.
Consequence: An air bag inflator that ruptures may result in sharp metal fragments striking the driver or passengers, increasing the risk of injury or death.
Remedy: Dealers will inspect and replace the air bag inflator, as necessary, free of charge. Interim notification letters, notifying owners of the safety risk, were mailed July 3, 2026. Additional letters will be sent once the final remedy is available, anticipated August, 2026.
Owners may contact Hyundai customer service at 1-855-371-9460. Hyundai's number for this recall is 300. Vehicle Identification Numbers (VINs) involved in this recall became searchable on NHTSA.gov on May 16, 2026.
Hyundai Motor America (Hyundai) is recalling certain 2015-2016 Elantra vehicles. The trunk latch may become damaged, preventing the opening of the trunk from the inside. As such, these vehicles fail to comply with the requirements of Federal Motor Vehicle Safety Standard number 401, "Internal Trunk Release."
Consequence: A person inside the trunk compartment may become trapped, increasing their risk of injury.
Remedy: Dealers will replace the trunk latch base sub-assembly, free of charge. Owner notification letters were mailed April 5, 2024. Owners may contact Hyundai customer service at 1-855-371-9460. Hyundai's number for this recall is 256.
SERVICE BRAKES, HYDRAULIC:ANTILOCK/TRACTION CONTROL/ELECTRONIC LIMITED SLIP:CONTROL UNIT/MODULE · 23V651000
2023-09-22
Hyundai Motor America (Hyundai) is recalling certain 2011-2015 Elantra, Genesis Coupe, Sonata Hybrid, 2012-2015 Accent, Azera, Veloster, 2013-2015 Elantra Coupe, Santa Fe, 2014-2015 Equus, 2010-2012 Veracruz, 2010-2013 Tucson, 2015 Tucson Fuel Cell, and 2013 Santa Fe Sport vehicles. The Anti-Lock Brake System (ABS) module may leak brake fluid internally and cause an electrical short, which can result in an engine compartment fire while parked or driving.
Consequence: An engine compartment fire while parked or driving can increase the risk of injury.
Remedy: Owners are advised to park outside and away from structures until the recall repair is complete. Dealers will replace the ABS fuse, free of charge. Owner notification letters were mailed April 10, 2024 through October 11, 2024. Owners may contact Hyundai customer service at 1-855-371-9460. Hyundai's number for this recall is 251.
Size-standard part numbers — verify your connector type before buying. Rear blades are model-specific; check the package's vehicle list.
Fuel economy figures are EPA data via fueleconomy.gov (median across matching trims). Performance figures are compiled estimates for the 2015 Hyundai Elantra 2.0L I4 and can vary by trim.
🔧 Built by master technician Chris Hackleman · Master Technician · 20+ years.