2011 Hyundai Equus problems & reliability
24 owner complaints filed with NHTSA for the 2011 Hyundai Equus, alongside 2 safety recall campaigns. Last verified Aug 7, 2026. Complaints are unverified reports submitted by owners to the federal Office of Defects Investigation.
Each complaint is counted once (by NHTSA case number), even when it names several vehicles.
2 complaints report injuries (2 injured).
Most reported problems
| Component | Complaints | Share |
|---|---|---|
| Suspension → | 11 | 46% |
| Service Brakes | 6 | 25% |
| Electrical System | 4 | 17% |
| Wheels | 3 | 13% |
| Exterior Lighting | 2 | 8% |
| Air Bags | 1 | 4% |
| Electronic Stability Control (esc) | 1 | 4% |
| Engine | 1 | 4% |
| Engine and Engine Cooling | 1 | 4% |
| Steering | 1 | 4% |
Component groups as classified by NHTSA. A complaint can name more than one component, so shares may sum to more than 100%.
All 12 reported components →Complaints by incident year
What owners report
“The contact owns a 2011 Hyundai Equus. The contact stated that the front shocks were previously replaced under an unknown recall. The contact stated that while driving at various speeds, the vehicle experienced rear suspension failure. The vehicle was taken to the dealer, where the rear springs were replaced; however…”
Suspension · filed May 2, 2025
“The contact owns a 2011 Hyundai Equus. The contact stated there was an abnormal knocking sound coming from the engine. There was no warning light illuminated. The vehicle was taken to a local independent mechanic, where the vehicle was diagnosed, and the contact was advised that the rod bearings had failed, and the…”
Engine · filed Apr 15, 2025
“The contact owns a 2011 Hyundai Equus. The contact stated that while his wife was driving at an undisclosed speed, the vehicle stalled however, the driver was able to pull to the side of the road where the vehicle lost motive and was unable to be restarted. The contact stated that he was unaware of any warning lights…”
Engine and Engine Cooling · filed May 4, 2022
Verbatim excerpts from complaints filed with NHTSA. Reports are not independently verified.
Technical service bulletins
60 manufacturer communications (TSBs, service campaigns, warranty extensions) are on file with NHTSA for the 2011 Hyundai Equus. The 10 most recent:
The National Highway Traffic Safety Administration (NHTSA) has identified the presence of substandard and dangerous driver’s-side airbag inflators manufactured by Jilin Province Detiannuo Automobile Safety System Co.…
DTN DL · Other · issued Apr 10, 2026
The National Highway Traffic Safety Administration (NHTSA) has issued an urgent safety advisory regarding dangerous, counterfeit driver‑side airbag inflators manufactured by Jilin Province Detiannuo Automobile Safety…
DTN DCS · Other · issued Apr 10, 2026
This bulletin provides information regarding condensation related to the accumulated moisture in the headlamp, rear combination lamp, daytime running lamp (DRL), or fog lamp. This TSB illustrates the various causes of…
25-BD-012H TSB · Service Bulletin/Repair Instructions · issued Nov 6, 2025
This TSB provides a procedure to diagnose and replace, if necessary, an automatic transmission with Incorrect Ratio DTC (transmission clutch slip in gear above limit) listed on Page 2.
24-AT-002H · Service Bulletin/Repair Instructions · issued Apr 9, 2024
This bulletin contains information about the proper removal of the windshield wiper blade protective cover on all models. If the protective cover is not removed correctly, there is a possibility of the rubber insert and…
24-BD-001H · Service Bulletin/Repair Instructions · issued Feb 14, 2024
This bulletin provides important checkpoint guidelines when performing engine oil and filter change services.
23-EM-005H · Service Bulletin/Repair Instructions · issued Oct 13, 2023
Hyundai applies a Paint Protection Film (PPF) on new vehicles before delivery to dealerships. It provides a barrier between the paint and contaminants, such as rail dust, acid rain, and industrial fallout. In rare…
23-BD-007H · Service Bulletin/Repair Instructions · issued Apr 24, 2023
In certain areas, a vehicleâ s underbody may exhibit corrosion due to road-salt usage. As a preventative measure, a cavity wax coating is applied to the internal surfaces of underbody components and an undercoating…
23-01-034H · Service Bulletin/Repair Instructions · issued Apr 12, 2023
In some areas, a vehicleâ s underbody may exhibit corrosion due to road salt usage. As a preventative measure, cavity wax coating is applied to the internal surfaces of underbody components, and an undercoating spray is…
23-01-034H · Service Bulletin/Repair Instructions · issued Apr 12, 2023
This bulletin provides information regarding condensation related to the accumulated moisture in the headlamp, rear combination lamp, daytime running lamp (DRL), or fog lamp. This TSB illustrates the various causes of…
23-BD-002H · Service Bulletin/Repair Instructions · issued Jan 30, 2023
TSBs are repair guidance manufacturers send to dealers — they are not recalls and repairs are not automatically free. Full documents are available on NHTSA’s site.
Safety recalls
The 2011 Hyundai Equus has 2 NHTSA recall campaigns — recall repairs are free at franchised dealers regardless of the vehicle’s age.
Check whether your specific vehicle is affected
Recall campaigns often cover only certain VIN ranges. Enter your VIN on the official NHTSA site to confirm whether your vehicle is included and whether the repair is still open.
Check VIN on NHTSA →Buying a used 2011 Hyundai Equus?
- · Decode the seller’s VIN with our free VIN decoder to confirm the exact year, engine and trim.
- · Check for unrepaired recalls by VIN on NHTSA’s official lookup — recall repairs are free.