Hyundai Santa Fe

Variable turbine geometry (VGT) actuator can seize or fail. Boost pressure no longer controllable; engine runs in limp mode with severely reduced power.

Symptoms: Significant power loss, engine limp mode, turbocharger whistling or howling, check engine light.

Piezo injectors on the D4HB are sensitive to fuel contamination. Blocked or defective injectors cause rough running, elevated emissions and poor cold start.

Symptoms: Engine stuttering, poor cold start, excess fuel consumption, misfires, P0201–P0204 fault codes.

The Bosch CP4 high-pressure pump does not tolerate fuel with air bubbles. The roller tappet can hop over the cam lobe, sending metal debris throughout the entire common-rail system. Complete injection system replacement is required.

Symptoms: Sudden engine failure, unable to restart, metallic knocking before failure, severe power loss.

EGR valve on the 2.2 CRDi clogs in urban use. Piezo injectors are sensitive to fuel quality. Regular cleaning of the intake system is necessary.

Symptoms: Rough idle, power deficiency, check engine light, increased fuel consumption, P0400 fault.

The D4HB timing chain stretches from approximately 150,000 km and needs renewal. The dual-chain system with balance shaft at the bottom of the oil pan is complex; replacement advisable before 200,000 km.

Symptoms: Rattling on cold start, camshaft position errors, in severe cases chain skips and bends valves.

The intercooler hoses and intercooler on the D4HB develop cracks and holes at high mileages. Boost pressure drop leads to power loss and limp mode; early models were subject to a recall.

Symptoms: Hissing from engine bay under load, severe power loss, limp mode, boost pressure fault code.

Dirt and moisture can penetrate the ABS module and cause a short circuit leading to fire risk. 91,900 vehicles affected worldwide, of which 2,778 in Germany.

Faulty control of the electric oil pump causes pressure drop in the dual-clutch transmission and loss of drive force. Recall 21D155 affects production March 2021 to April 2022, 1,701 vehicles in Germany.

Steering wheel can separate from the steering column while driving, leading to complete loss of vehicle control. Recall NHTSA 18V118000 affects 41,070 vehicles.

Recall on the Santa Fe TM due to inadequate fuel tank reinforcement that poses a fire risk in certain crash scenarios. Affected vehicles received reinforcement plates.

Worn camshaft bearings on the 2.0 CRDi have been documented from as little as 33,000 km. A material defect in the cylinder head causes severe running noises and engine damage without any obvious prior warning.

The high vehicle weight of over 1,900 kg puts disproportionate stress on the braking system. Rear brake discs and pads wear faster than expected and need replacing sooner.

The vehicle identification number (VIN) stored in the eCall emergency call system may be incorrect and transmit wrong vehicle data in an emergency. Correction by dealer via software.

Leaking shaft seals at the transmission driveshaft are reported on the Santa Fe TM. Brown-rusty transmission fluid leaks out; the seal must be replaced multiple times if the shaft is worn.

Control arm ball joints and boots wear on the Santa Fe TM due to the high vehicle weight. First knocking noises after 40,000–80,000 km; MOT criticises axle joints.