Hyundai Grandeur
Beefy diesel for big SUVs and vans. Chain-driven, strong torque, but turbos can wear over time.
Luxury barge, no pace
The Grandeur TG is built for wafting, not hustling. Premium comfort over everything else.
Engine Weaknesses 5
The D4EB uses a timing belt rather than a chain. Manufacturer recommends replacement every 90,000–96,000 km. Belt breakage leads to severe engine damage on this interference engine.
Symptoms: No direct warning before breakage. Light rattling or squealing shortly before failure possible.
The variable vanes of the VGT turbocharger stick due to soot deposits and get stuck in one position. The result is a severe power drop and limp mode.
Symptoms: Severe power loss, turbo whistling, check engine light, black smoke from exhaust.
On the D4EB the high-pressure pump can pump diesel into the engine oil via seal failure. The extremely elevated oil pressure can blow out seals and destroy the turbo.
Symptoms: Rapidly rising oil level (diesel smell in oil), power loss, engine warning light, turbo failure.
The EGR valve on the D4EB clogs with soot deposits, especially in frequent short-trip use. A stuck EGR valve significantly impairs turbo throttle response.
Symptoms: Rough idle, power loss in the lower RPM range, increased fuel consumption, fault code P0401.
The thermostat on the D4EB can seize in the closed position at higher mileages, causing overheating. The coolant temperature sensor then shows implausible readings.
Symptoms: Coolant temperature rises unusually fast, heater blows excessively hot air, occasional coolant boiling.
Vehicle Weaknesses 11
A recall was issued for the Grandeur TG due to a manufacturing defect in the ABS circuit board. When exposed to water, short circuits can occur creating a fire risk.
The F5A51 automatic transmission in the Grandeur TG shows elevated failure rates. Metallic noises from the gearbox housing, sensor failures, and limp mode are typical. Repairs are expensive; valve body work alone costs around €900.
Automatic gearbox on the Grandeur TG is considered disproportionately failure-prone. Transmission electronics (input/output sensors) fail and switch to limp mode. Vehicles with little short-trip use and regular oil changes last longer.
The Grandeur TG shows problems with reverse gear on the automatic due to shifter linkage misalignment. Gearbox oil leaks at the front pump seal and cover are also reported.
A recall for the TG Grandeur concerned the driver's seat adjustment switches, which failed while driving and distracted the driver. Affected vehicles from March to August 2007.
On the Grandeur TG, driveshafts wear at higher mileages. After a driveshaft replacement, metallic noises from the transmission can occur, indicating secondary damage.
During Grandeur TG brake repairs, incorrectly dimensioned discs are often fitted (256 mm instead of the original 303 mm). Wrong discs lead to reduced braking performance and safety issues.
On the Grandeur TG, the instrument cluster shows sporadic failures: fuel level indicator, warning lights, and illumination can fail intermittently. Cause often moisture or contact faults.
The electric rear blind of the Grandeur TG exhibits mechanical faults and jams regularly. Drive motors and guide rails wear out, preventing the blind from fully opening or closing.
Electrical systems and electromechanical steering show disproportionate failure rates according to damage statistics. Steering responds with fault messages or delayed feedback. Special Hyundai software often required for diagnosis.
Electric rear blind is a widespread weakness and fails on most examples with increasing age. Drive or mechanism jams.