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 needed to be replaced. The vehicle was not repaired. The manufacturer was notified of the failure. The approximate failure mileage was 120,000.
Engine & cooling
2011 Hyundai Equus Engine problems
Owners have filed 2 complaints about the 2011 Hyundai Equus's engine & cooling with NHTSA - 8% of all its complaints, most recently on April 15, 2025. Stalling, loss of power, oil consumption, overheating, head gaskets, timing chains and engine failure.
- Complaints
- 2
- Recalls
- 0
- Crashes
- 0
- Fires
- 0
- Injuries
- 0
- Deaths
- 0
Engine complaints
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 being illuminated. The vehicle was towed to an independent mechanic who advised that they would attempt to restart the electronic computer module (ECM). The repair was successful however, the contact...
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stated that the independent mechanic advised him that the failure could recur and that the vehicle should be taken to the dealer. The contact stated that the failure recurred without warning. The vehicle was then towed to the dealer. The failure was diagnosed that the ECM had malfunctioned and needed to be replaced. The ECM was replaced by a module from another vehicle. The contact stated that the vehicle had been at the dealer since July of 2021 as the replacement part was on back order. The contact stated that the dealer informed him that other issues were found with the vehicle and the contact was awaiting a call from the dealer. The manufacturer was notified of the failure and a case was opened. The approximate failure mileage was 50,000.
Hyundai Equus engine complaints by year
Equus engine problems, every yearSource: U.S. National Highway Traffic Safety Administration (NHTSA) complaints and recalls, checked . Complaints are owners' own reports and are not verified. How we use the data