Mercedes-Benz EQE SUV AMG 43 4MATIC X294

The EQE SUV AMG uses the same MBUX system as the EQS and EQE sedan, and it shares the same software instability found on early production cars. Owners report screens going black during driving, navigation disappearing mid-route, and over-the-air updates getting stuck at 80-90% and never completing. A soft reset (holding phone + voice buttons for 15-20 seconds) fixes temporary freezes, but persistent issues may require a dealer visit for a full software flash that can take 3-23 hours depending on scope. If the central MBUX control unit hardware fails, replacement costs around €1,500-2,500. The optional MBUX Hyperscreen (three displays under one glass panel) adds further complexity. Cars built from mid-2024 onward with updated software show fewer incidents, though the issue has not been entirely eliminated.

Mercedes recalled 14,912 EQE and EQS vehicles (2023-2025 production) after discovering the battery management system software could cause the high-voltage battery to shut down without warning, resulting in complete loss of propulsion. The fix is a dealer-applied software update that cannot be performed over-the-air. In Germany alone, 3,699 units were affected. A separate earlier recall covered 8,281 units of 2022-2023 models for a related drivetrain software fault. If the recall is completed, there is no ongoing cost. If the software triggers a fault that damages control modules before the update is applied, diagnosis and repair could cost €300-500. Verify completion before purchase.

Mercedes recalled nearly 32,000 vehicles across the EQ range for an improperly manufactured 80-Amp fuse in the main fuse box. Affected vehicles were assembled between February and November 2023. If the fuse fails, consequences include loss of drive power, instrument cluster failure, restraint system malfunction, or increased fire risk. The fix involves replacing the main fuse box at a dealer under the recall. A subsequent second recall addressed vehicles where the first fuse box replacement was itself performed incorrectly. Outside recall coverage, fuse box replacement costs €200-600 including labor.

The EQE SUV AMG 43 uses AMG-tuned AIRMATIC air suspension on all four corners as standard equipment. Common failure modes on Mercedes air suspension systems include leaking air struts (rubber seals become brittle with age and UV exposure, causing hissing and uneven ride height), compressor failure from moisture ingress, and faulty height sensors. A single air spring replacement costs €1,500-2,000 including labor. The compressor runs €1,000-1,500. If moisture from a failed compressor spreads to air springs, multiple components can fail together, pushing costs to €4,000-5,000. AIRMATIC components typically last 8-12 years or 100,000-150,000 km on other Mercedes models. Current EQE SUV AMGs are relatively young (less than 4 years old), so widespread failures have not materialized yet, but this represents the single largest potential repair cost as the car ages.

The EQE SUV relies on a 12V battery to wake the computers, release the parking pawl, and close the high-voltage contactors. With dozens of electronic control units drawing standby power (telematics, SmartKey polling, MBUX), the 12V system can drain completely within one to two weeks of inactivity. Symptoms include 'Malfunction - stop vehicle' warnings, an instrument cluster that won't boot, or inability to unlock the doors. Mercedes has issued software updates that improve 12V charging management and sleep behavior. Replacement of the 12V battery costs €300-600 including SAM module programming. Prevention: keep the car plugged in when parked for extended periods, store the key at least 5 meters from the car to let sensors sleep, and use the built-in Standby Mode for longer absences.

The EQE SUV's thermal management system uses an expansion valve (Y140/1) in the battery refrigerant circuit to regulate cooling. Some owners have reported fault code B3A0077 indicating this valve is stuck open, which can reduce DC fast charging performance and limit battery power output in hot weather. Mercedes released an updated part (replacing A 297 830 54 03 with A 297 830 89 03) to address this. In some cases the entire cooling system was overhauled, including replacing faulty radiator shutters that were not opening or closing properly. Under warranty, this is typically covered. Outside warranty, expansion valve replacement runs €400-600, while more extensive cooling system work (including radiator shutters and coolant refill) can reach €1,000-1,200.

A widely reported issue across the Mercedes EQ range, not limited to the AMG variant. The forward collision avoidance system can trigger sudden, hard braking at speeds above 70 km/h with no vehicle or obstacle ahead. Some owners also report abrupt braking while reversing in parking areas. Road grime, ice, or residue on radar and camera apertures can trigger false readings. Mercedes has not issued a specific recall but has adjusted sensor calibration parameters in later software updates. Some owners change the emergency braking sensitivity setting from 'normal' to 'late,' though it re-enables at each ignition cycle. The braking itself causes no repair cost, but any resulting rear-end collision from the unexpected stop would. Cars from 2024 onward show fewer incidents with updated calibration.

Some EQE SUV owners report AC charging stopping mid-session, DC fast charging handshake failures with certain networks, or the charging port door becoming stuck. The CCS DC connector can become misaligned if a public charger overheats during a session, damaging the vehicle's pins. A charging port replacement costs approximately €650 for parts plus labor. The on-board AC/DC converter module replacement runs €1,200-2,500. A stuck charging port door actuator is a cheaper fix at €200-400. Many charging issues turn out to be software-related and are resolved by updates. There is a manual release cable near the rear fuse box for a stuck charging flap.