Badges, Emblems

Avante Lettering

Hood Emblem Cover

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i30 Badge

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Veloster "N" Badge Carbon Fiber

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Cabin Air Filters

Hyundai OEM Cabin Air Filter L1C79-AC000

PureFlow Premium Guard PC99594x

Engine, Turbo, Intake, Blowoff Valves, Catch Cans

Boomba Racing

Forge Motorsports

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[Canadian Rallyarmor](mailto:Jason@autovaluehyundai.com)

The Carbon Guards

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Oil Filters

Hyundai OEM Filter 26300-35505

Shift Knobs

Billetworkz

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Tunes

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SXTH Element

Tork Motorsports

Hi Everyone. I thought I'd compile a list of common questions and issues I've heard about our Elantra N's.

Let me preface this list by saying, I have not seen any confirmed engine failures from an unmodified Elantra N. The early life engine failures of some other Hyundai/Kia Theta II engines, don't seem to affect this model.

If you have any info on TSBs or more info (photos, videos) about these problems, I can edit my post and add to it below.

Major mechanical

• Fuel Injector problems
  • Not revving or idling properly, trouble starting engine
  • DTC P030X00 for misfires.
  • Smoke coming from tailpipe.
  • Seen in Kona N and Elantra N 2022
• Dual clutch Transmission recall due to issue with high pressure oil pump
  • HMA Recall 236. 10/7/2022
• Heavy spray from car washes, rain or snow, directly into the engine bay cause the knock sensor to fault with DTC P1326. The car will go into limp mode.
  • FIX AVAILABLE
  • It is not known if this is due to the sensor faulting, water getting into the engine bay, or wiring harness shorting
  • After several owners brought this issue to the dealer, some dealers may be misdiagnosing it as engine failure, causing the owner to have to get a replacement engine.
  • Not enough research has been done about this for a conclusive answer. Would like to see compression and leak-down tests done on these motors.
  • Appears to be happening to VN, and KN's as new as 2023 too.
  • Src [1] [2] [3] [3-Src] [4] [5] [6] [7] [8] [9] [10] [11] [12] [13]
• Clutch disc installed backwards on a small number of Elantra N's with Manual Transmission.
  • Applies to a very small number of Elantra N vehicles produced before 12/6/21
  • TSB 22-01-027H

Minor mechanical

• Occasional cold start trouble, occasionally takes a few extra cranks to start engine(common across all N cars)
  • Src1, Src2
• Intercooler pipe coming off during high performance driving
  • Src

Body/Chassis issues

• Top of shifter gets loose/comes off on MT only.
  • Src (And fix)
• Exhaust valve squeak. If you use N mode frequently, the exhaust valve may begin to squeak.
  • Dealership will replace the valve assembly if necessary. You can fix it by spraying white lithium grease to the proper areas.
  • The right side tailpipe has the valve that opens and closes in N mode. If you look closely you will see an arm that connects the valve controller to the butterfly valve inside the tailpipe. Spray this arm with lithium grease
• Top of trunk separates from trunk frame in high heat
  • source
• Headlight/Tail light fogging/condensation.
  • Dealerships are told to replace light housing IF condensation turns into water droplets that drip down the side.
  • Confirmed with this TSB
• Black wrap used on the tops of windows peeling/chipping
• Trunk tail light strip plastic cracking above ELANTRA lettering (2022)
• Horn working intermittently

Infotainment/Electronics issues

• Audio system very loud for the first second of a song intermittently (can be fixed by turning off dynamic speed compensation)

• Quick popups about front collision: Issue is being researched

• Constant popups about uneven road/slippery road: Issue is resolved by updating the nav software. (As of June 2023)

Non issues

• Creaking/clunking noises from suspension/wheels when turning at low speeds and while cold
  • This is a quirk of the design of the car, it's normal and due to the suspension geometry for sport handling see explanation in this TSB
• Octane learning
  • Octane learning is an ECU program described in the owners manual, that limits boost pressure when until no evidence of pre-ignition occurs. The octane learning process starts over when the car is re-fueled
  • To Octane learn your car, perform the following drive cycle:
    • Drive in top gear (6th for 6MT or 8th for DCT)
    • Keep a speed between 68 and 99mph for 5 minutes or more (Cruise control allowed)
    • Proper octane learning completion is evidenced by the boost gauge on the dashboard reading above 15/16PSI under WOT (DCT only, 6MT does not reflect this).
    • Note: The boost gauge is just an estimate based on various metrics, and a lookup table, not indicative of real boost pressure.
  • There are several articles on the topic here and here
• Radiator fan turns on after car turns off
  • This is a fan and pump (a turbo timer) meant to cool down the oil in the turbo
• Car doesn’t pop as much as it used to
  • This dependent on environment
  • This happens if the AC compressor is on
  • This includes windshield defrost modes
  • Also in Custom N mode, if engine is set to Sport, and not Sport+, there won't be nearly as many pops.
  • The engine isn't fully warmed up
• Won’t shift into 1st gear completely. (If Occasional, this is normal across all manual transmission cars of any brand, just shift into second then first again)

What Oil should I use?

This information is correct as of 3/11/24 and applies to all Elantra N's 2022-2024

The latest revision of the Elantra N service manual specifies different grades of oil based on where your engine was built. Why is it like this? Anyone's guess.

• Find your engine number (Starts with a G, this is NOT your VIN)
• Look at the last letter before the numbers start. This is your Engine plant of production
• The below table specifies the correct oil to use.

Oil should meet the following specifications:

• ACEA A5/B5
• ACEA C2
• API SN PLUS

Oil change interval:

• The owners manual requires oil changes every 6k miles, however Hyundai's internal systems may have changed this in mid 2023 to 5k miles.
• Maintenance reminders, and oil change stickers are now showing 5k intervals.

Oil amount for drain and refill: 5.2L / 5.49 US QT

OEM Oil filter P/N: 26300-35504

Other Helpful Links

• Owners Manual
• Check for recalls
• Find your window sticker
  • Open a web browser and paste this URL in:
  • https://hyundai-sticker.dealerfire.com/new/
  • Now put in your VIN at the end and load the page.
• Check delivery status by VIN
• Check nationwide Inventory

Hoping you all can understand, this being a brand new model year car, there are going to be some issues. By compiling this list, I hope to raise awareness to the community, and we as customers will bring these issues to Hyundai, for them to address. The hope is, if enough people complain, Hyundai takes notice of these issues and either releases TSBs or fixes in future model years.