Mercedes-Benz EQS SUV 450 4MATIC X296

The MBUX Hyperscreen spans the full dashboard width and controls nearly all vehicle functions: navigation, climate, charging, camera views, and vehicle settings. Owners of 2022-2023 production cars widely report system lag, full screen blackouts, random reboots mid-drive, and OTA updates that fail or get stuck at 80-90%. When the screen goes black, navigation, climate control, and the reversing camera are all lost. A soft reset (holding the power/volume button) often restores function temporarily. Mercedes issued a recall for MBUX issues on cars built between July 2020 and January 2022. Most problems are resolved by dealer software updates (which can take 3-23 hours depending on scope). Cars built from mid-2024 onward show significant improvement. If problems persist after all updates, the central MBUX control unit may need hardware replacement at around €1,500-2,500.

This is the most common safety-related complaint across the EQS range. NHTSA data shows that 72% of 2022 EQS complaints relate to forward collision avoidance and phantom braking. Owners report sudden, violent braking at speeds above 70 km/h with nothing ahead, and unexpected braking while reversing in parking areas. In one documented case, the emergency brakes engaged at 90 km/h and deployed airbags, bringing the car to a sudden halt. Mercedes has stated this falls under normal system operation and has not issued a specific recall. Some owners switch the sensitivity setting to 'late' or disable the system entirely, though it re-enables at each startup. The issue is less frequent on 2024+ models with updated sensor calibration. While the braking itself costs nothing, any resulting collision damage from a rear-end accident can be costly.

The EQS SUV uses AIRMATIC air suspension on all four corners as standard equipment. Common failure modes include leaking air struts (rubber seals become brittle over time, causing hissing sounds and uneven ride height), compressor failure from moisture ingress, and faulty height sensors. A single air spring replacement costs approximately €1,500-2,000 including labor. The compressor runs €1,000-1,500. If multiple components fail simultaneously (which happens when moisture from a failed compressor spreads to the air springs), costs can reach €4,000-5,000. AIRMATIC components typically last 8-12 years or 100,000-150,000 km, so early EQS SUV cars may not yet show these failures. However, as the car ages, this becomes the single most expensive potential repair. Replacement requires a Mercedes-specific scan tool to depressurize the system safely and recalibrate ride height. It is highly recommended to replace struts in pairs (both front or both rear) to ensure even performance.

The EQS SUV has over 100 electronic control units drawing standby power. When the car is not plugged in, the 12V system can drain completely within one to two weeks of inactivity, leaving the car unable to unlock or respond to the key fob. Replacement of the main 12V battery costs €400-600 including programming into the SAM module. Mercedes considers this normal behavior for a car with this level of electronic complexity rather than a defect. A software update improved the 12V charging management on some models. Prevention is straightforward: keep the car plugged into an AC charger when parked for extended periods, or connect a battery tender to the 12V system.

Some owners report the car stopping AC charging mid-session, showing 'charging start error' at public chargers, or DC fast charging speed dropping dramatically. Causes include a faulty temperature sensor on the charging unit that incorrectly detects overheating, on-board charger (AC/DC converter) malfunction, or communication errors between the car and the charging infrastructure. In documented cases, the AC/DC converter required replacement after the high-voltage system was deactivated for diagnosis. Parts and labor for the on-board charger module run approximately €1,200-2,500. A faulty temperature sensor is a cheaper fix at around €300-500. Some charging issues are software-related and resolved by updates.

The EQS SUV uses electronically retractable flush door handles for improved aerodynamics. The handle assembly integrates a presentation motor, Keyless-Go sensors, and an electronic latch actuator as a single unit. Failures are typically electronic rather than mechanical, and can be intermittent. Common symptoms include handles not responding to the touch sensor for locking/unlocking. Many failures can be temporarily resolved by rebooting the system (disconnecting the 12V battery for 15 minutes), but if the motor or sensor module has failed, the entire integrated assembly must be replaced. Parts are expensive because the full assembly is not serviceable at component level. Replacement requires door panel, window glass, and window regulator removal.

The EQS SUV features optional Digital Light headlights with 1.3 million micro-mirrors per unit, creating precise adaptive beam patterns. When these fail, replacement costs are among the highest for any single component on the car. The Digital Light system with micro-mirror technology runs €2,500-4,000 per headlight including coding and labor. The lens is bonded and cannot be replaced independently. Failure is rare but has been reported, typically presenting as condensation buildup followed by partial or complete malfunction. Within warranty this is covered. Outside warranty, this is one of the most expensive single-item repairs. Not all EQS SUVs have Digital Light (it is optional), so check the specification sheet.

Multiple owners report significant range reduction after software updates at Mercedes dealers. One 2022 EQS owner saw range at 80% charge drop from 550 km to 450 km over 30 days after an update. Mercedes recalled 14,912 EVs (2023-2025 EQS/EQE models) for battery management system software that did not meet production specifications. The fix requires a dealer visit and cannot be done over-the-air. Some owners experienced cars locking them out after failed OTA updates. While the updates themselves are free, repeated dealer visits for diagnosis and correction consume time. In rare cases where the battery management software causes accelerated cell degradation, the 10-year battery warranty would apply.