This bulletin provides repair information on certain 18MY G80 (DH) vehicles equipped with a 4-bolt steering gear assembly. If a vehicle exhibits a center biased steering feel, and no DTC(s) are active in the steering system, it is recommended to replace the rack-mounted motor driven power steering (R-MDPS) assembly using the updated part numbers shown below:
full bulletin at NHTSA ↗2018 Genesis G80 steering problems
severe 15 complaints filed with NHTSA · avg repair $700 · see steering across all vehicles →
Complaints
15
Recalls
0
Avg fix
$700
2crashes
When does it fail?
Of the 15 steering complaints filed for the 2018 Genesis G80, here's the actual mileage breakdown — failures cluster heaviest at 50,000-75,000 mi.
0-25k
25-50k
50-75k
75-100k
100-125k
125-150k
150k+
Each bar shows the share of total complaints filed at that mileage range. Peak failure window highlighted. Some owners report problems earlier; some make it well past 150,000 miles symptom-free. Maintenance habits and driving conditions shift the curve as much as mileage alone.
What stands out
No new NHTSA steering complaint has been filed on this vehicle in over 3 years — the issue may be aging out of the active population.
Is there a fix? Manufacturer service bulletins
The manufacturer has issued service bulletins covering steering on this vehicle — documented repair instructions, service campaigns, or warranty extensions sent to dealers. A TSB isn't a recall (it's not a free safety remedy), but it's the manufacturer acknowledging the issue and how to fix it.
Some Genesis G80 vehicles may experience a haptic steering warning light with DTC Code B247100 ? Vibration Motor Fault code set. This bulletin provides service information and the procedure to replace the haptic controller.
full bulletin at NHTSA ↗Source: NHTSA manufacturer communications. Bring the bulletin number to your dealer or shop.
The failure pattern owners describe
The 2018 Genesis G80 has a well-documented steering issue: the steering wheel binds when turning and does not return to center without driver effort. Owners report this happening on gentle 25-mph curves and extended turns, at both highway and low speeds, regardless of weather. One owner first experienced it at 27,300 miles; it recurred at 47,500 miles. Several owners have replicated the problem but dealers or independent mechanics either cannot fix it without a full teardown or claim no fault exists.
Genesis issued Technical Service Bulletin #20-ST-004HG in October 2020 and covers the repair—replacement of the Rack Mounted Motor-Driven Power Steering Assembly—under the original warranty only. Estimated repair cost is approximately $5,000 out of warranty. Owners report one case where the warranty was denied because the service appointment fell five days after warranty expiration, despite the issue being reported while coverage was active.
Beyond steering binding, owners report lane keep assist fighting their input and forcing the vehicle out of lane, even after being disengaged (requiring engine restart to fully disengage). Others describe excessive steering vibration when driving over road imperfections—measured at 4–5 times higher than comparable vehicles—that dealers cannot replicate during testing. One complaint cites factory caster misalignment across all 2018–2019 models, which service centers acknowledge but refuse to correct. A single complaint involves steering wheel airbag failure during a frontal crash (DTC B1378) while all other airbags deployed normally.
Failure modes owners describe
Steering Linkage Binding in Curves
Steering wheel binds during extended or gentle turns and does not return to center without driver effort. Vehicle veers to the side if driver does not manually return wheel. Occurs intermittently.
When: First reported July 2020 at 27,300 mi; recurred December 2022 at 47,500 mi. Reported across multiple model years and mileage points.
Symptoms owners cite: Steering wheel sticks in turned position; Does not auto-return to center; Requires exaggerated driver effort to straighten; Occurs on curves at both highway and low speeds; Not temperature dependent; Oversteer tendency when binding occurs; Steering becomes unpredictable
Repairs/costs cited: Genesis/Hyundai dealers report replacing Rack Mounted Motor-Driven Power Steering Assembly under warranty. Estimated repair cost approximately $5,000 out of warranty. TSB #20-ST-004HG issued 10/2020. Local mechanics unable to explain without full steering teardown.
Recalls/TSBs owners mention: TSB #20-ST-004HG #20-ST-004HG issued October 2020. Manufacturer covers repair under original warranty only; warranty now expired for all 2018 models. One owner reported initial warranty replacement at Davis Hyundai; same issue recurred after warranty expiration and was denied coverage.
Steering Wheel Airbag Failure to Deploy
Steering wheel airbag failed to deploy during frontal collision while all other airbags (including rear seat) deployed normally. No warning lights or codes before incident.
When: Occurred during crash event; exact mileage not stated
Symptoms owners cite: Steering wheel airbag did not deploy during frontal impact; All other airbags deployed; No pre-incident warning lights or messages; Post-incident diagnostic scan revealed DTC B1378 (airbag system fault); SRS system recorded crash severity sufficient to trigger other airbags
Codes mentioned: B1378
Repairs/costs cited: Owners report DTC B1378 indicates fault in airbag system circuitry. Owners sought diagnostic scans from Genesis-certified dealers but repairs not yet documented in narratives.
Recalls/TSBs owners mention: No manufacturer recall issued. Owners report requesting formal inspection and corrective action from Genesis; responses not documented in narratives. No TSB or warranty program mentioned for this failure.
Lane Keep Assist Malfunction
Lane Keep Assist system periodically fights driver control and forces vehicle out of lane even during perfect weather and road conditions. Car pulls from side to side. System remains active even after disengagement, requiring vehicle restart to fully disengage.
When: Ongoing issues reported across multiple 2018 model year vehicles
Symptoms owners cite: LKA fights driver steering input; Vehicle forced out of lane; Car pulls side to side constantly at highway speeds; Requires driver correction every second or less at highway speed; Occurs in good weather and clear road markings; Malfunction persists after LKA is disengaged (requires engine restart); Periodical departure from lane during normal driving
Repairs/costs cited: Dealers unable to replicate or provide fix. Service reported feature is working as designed when tested; owners disagree.
Recalls/TSBs owners mention: No recall or TSB documented. Dealers claim inability to replicate issue and state feature is functioning normally.
Steering Vibration and Shaking
Steering wheel vibrates and shakes excessively when driving over road imperfections. Vibration level measured 4–5 times greater than other vehicles. Intermittent but worsening.
When: Reported starting August 2022; ongoing and worsening
Symptoms owners cite: Steering wheel shakes over road imperfections; Excessive vibration level (4–5× higher than comparable vehicles); Intermittent but predictable to owner; Occurs even when vehicle is stationary (per one report); Not replicated during dealer testing
Repairs/costs cited: Service attributed to improper engine mounts; manufacturer stated defect cannot be fixed. One owner replaced all tires after developing bubbles and road noise; low-profile tire design cited as contributing factor.
Recalls/TSBs owners mention: Service center reports improper engine mounting is factory condition and cannot be corrected per manufacturer guidance. No TSB or remedy offered.
Caster Misalignment (Out of Factory Spec)
Caster alignment out of specification for all 2018–2019 G80 models. Service advisors confirmed this is a factory-wide defect affecting all vehicles of these model years.
When: Present from factory; detected during service across multiple model year vehicles
Symptoms owners cite: Caster out of specification; Car struggles to stay in constant direction; Constant pulling from side to side; Requires frequent steering corrections while driving; Contributes to steering instability and lane-keeping issues
Repairs/costs cited: No repair performed. Service centers report inability to adjust caster alignment.
Recalls/TSBs owners mention: Service centers report all 2018–2019 G80 models come from factory with this defect and reject adjustment. No TSB or recall issued.
Steering Unresponsiveness After Extended Highway Driving
Steering loses responsiveness and feels sticking or binding after sustained highway driving (one hour or more), particularly on exit ramps. Considerable effort required to adjust vehicle direction. Smooth and consistent steering not maintained.
When: First reported at 29,000 miles; ongoing with no improvement
Symptoms owners cite: Steering becomes unresponsive after prolonged highway speeds; Sticking or binding sensation (possible loss of power assist); Considerable effort needed to adjust direction; Most notable on exit ramps (near-miss of shoulder); Steering unpredictable and inconsistent; No visible warning lights
Repairs/costs cited: No repairs documented; owner awaiting first dealer service appointment.
Recalls/TSBs owners mention: No TSB or recall identified in narrative.
Autonomous Emergency Braking Failure
AEB system with pedestrian detection fails to engage in majority of situations. Service declared system functioning normally but unable or unwilling to demonstrate capability.
When: Ongoing issue; exact mileage not stated
Symptoms owners cite: AEB only works in 20–30% of test cases; Never activates with pedestrians; System appears non-functional despite service sign-off; No error codes or warnings
Repairs/costs cited: Service unable or unwilling to demonstrate AEB operation; stated everything fine without proof.
Recalls/TSBs owners mention: No recall, TSB, or manufacturer response documented.
Synthesized from 15 NHTSA owner complaints — unverified consumer allegations, summarized for patterns. The verbatim filings appear below.
What owners are reporting 6 most recent
Steering becomes unresponsive after highway speed for an hour or more. Feels like sticking or binding (loss of power assist?) and considerable effort needed to adjust vehicle direction. Most notable on exit ramps. Several times I came close to going off an exit ramp onto the shoulder. Even driving along a straight highway the steering is no longer smooth or consistent. Thus, steering is very…
My 2018 G80 3.8L HTRAC steering is sticking. When I turn the steering wheel slight right, like through a 25mph curve, the wheel will stay in that position until, I pull it back to straight.
Genesis installed dated technology (3G modules) for their connected services knowing 3G was being discontinued within 4 years of installing the technology. On December 31, 2022, Genesis will cease providing connected services to this car and model years 2017-2019. Genesis Connected services provides critical emergency services such as crash detection as well as numerous safety features, vehicle…
1-the steering wheel airbag failed to deploy during a collisiom while all other airbags `airbags including rear seat airbags -did deploy. This suggest a possible malfunction in the airbag control module steering wheel airbag unit or sensor system. **yes the vechcle is available for inspection by Genesis, NHTSA, or any authorized party. 2. As the driver I was at direct risk the steering wheel…
Lane keep assist (lka) malfunctioning infrequently. Car fighting my control and forcing me out of lane. Have to fight to stay in lane. Even after disengaging lka option car still fighting my control. Have pull off onto side of highway; turn car off; exit vehicle in heavy traffic. Reenter car and restart engine to disengage lka. Have to never reenage lka to avoid danger.
When taking long curves, the steering wheel binds in the direction of the turn, causing oversteer. Requires driver to make an exaggerated movement to return to property steering. When this occurs the steering wheel will not return to center without driver intention. This occurs whether the lane assist is on or off. It also does not seem to be temperature driven, as it happens in the heat and…
Had steering trouble with your 2018 Genesis G80?
File a complaint with NHTSA → It's free, official, and how every report above got here — owner filings are the federal safety record this page is built on.
Common questions
How serious is the steering problem on the 2018 Genesis G80?
It's a meaningful issue. 15 complaints have been filed and the failure mode causes operational problems for owners. Repairs average $700.
At what mileage does the steering typically fail?
Based on the 15 complaints filed, steering issues most often appear around 70,000 miles. Some report problems earlier; some make it well past 150,000 with no symptoms. Maintenance habits matter — vehicles that received timely fluid services and were not regularly overworked tend to last longer.
What does it cost to fix?
Independent shops typically charge around $700 for steering repairs on this vehicle. Dealer pricing tends to run 20-40% higher. The exact figure depends on the specific failure mode, parts availability, and your local labor rates. If you're outside factory warranty, an extended service contract often covers this category.
Are there any recalls related to steering?
No active recalls currently cover steering issues on this vehicle. The complaints filed represent owner-reported failures that haven't risen to the level of a manufacturer-issued recall — but they're still worth knowing about before you buy or budget for repairs.
Related
Complaint and recall data sourced from the National Highway Traffic Safety Administration (NHTSA)
public records database. Verify the raw federal record at
nhtsa.gov/vehicle/2018/Genesis/G80.
Severity ratings are derived from reported crashes, fires, injuries, and fatalities. Repair cost estimates are
independent-shop national averages and may differ in your area. Some links on this page are affiliate links.