Mercedes-Benz EQE SUV 300 X294

A widely reported issue across all EVA2 models. The car's dashboard and MercedesMe app frequently warn that the 12V battery is critical, even though the car starts normally. The root cause involves excessive parasitic draw from telematics modules and other always-on systems that drain the 12V battery within 1-2 weeks when parked. This prevents remote features like preheating and app connectivity from working. Mercedes has released software updates that adjust sleep behavior and telematics to reduce the drain, but the underlying architecture means the 12V battery still has a shorter lifespan than in conventional cars. Expect replacement every 3-4 years. A new 12V AGM battery costs around €150-250 for the part, with dealer labor adding another €100-150. While not a safety issue, it is a persistent annoyance. Many owners report the problem cleared after a specific dealer software update, so verifying the latest firmware is essential.

This is a recall-level issue affecting EQE SUVs built between February 2023 and May 2024. The high-voltage battery control module can become overloaded by diagnostic requests from other control units. When this happens, the battery software may reset the controller, which can lead to reduced power or total loss of propulsion while driving. Mercedes recalled approximately 14,912 vehicles (EQE, EQS, and their SUV variants) globally, with 3,699 confirmed in Germany (KBA recall 012871). The fix is a free dealer software update to the battery management system. If the recall has been completed (verify with VIN), this is no longer a concern. If it has not been completed, the vehicle should not be driven until the update is performed. The €0-500 range reflects that the recall repair is free, but if the shutdown caused secondary damage (worn brake components from sudden stops, towing costs), those expenses fall on the owner.

The electrically actuated expansion valve (part number A 297 830 54 03) in the battery thermal management circuit is prone to mechanical sticking, particularly in early-production EQ models. When stuck open, the system displays 'Cooling system fault. Operating energy input reduced. Service required' with fault code B3A0077. This limits charging speed and can restrict driving power in warm weather. Mercedes quietly revised the part (new number A 297 830 89 03) with improved durability, but many vehicles still have the original valve. The repair involves draining the refrigerant and coolant systems, replacing the valve, refilling, and running diagnostic purge routines. At a Mercedes dealer, expect €600-1,000 for the repair. Independent EV specialists may charge €400-700. This is treated as a silent revision rather than a formal recall, so the repair is not free outside warranty.

The EQE SUV uses electrically deployed flush door handles that retract into the bodywork. These are reported to stick or fail to deploy, particularly in cold or wet conditions. The mechanism involves a small electric motor and linkage that can wear or freeze. Owners report handles that work intermittently or require multiple presses. In some cases, the handle cannot be opened from outside at all, requiring use of the Mercedes Me app or the emergency mechanical release inside. A single handle replacement costs approximately €200-400 for the part plus labor at a dealer. Some owners have needed multiple handles replaced over the first few years. Cold-climate regions see this issue more frequently.

The MBUX Hyperscreen and standard infotainment system can freeze, go black, or display persistent error messages. A soft reset (holding phone and voice buttons for 15-20 seconds) resolves most episodes temporarily, but recurrent crashes may indicate corrupted software or, rarely, a failing head unit. Over-the-air updates sometimes fail or hang indefinitely, requiring the car to spend days at the dealer for manual reflashing. Some owners report that a comprehensive dealer software update (which can take up to 23 hours) resolved all issues permanently. In rare cases where the head unit hardware fails, replacement costs can reach €1,000-1,200. For most owners, this remains a software issue resolved through updates at no cost, but the frustration and time spent at the dealer is significant.

The EQE SUV 300 comes with steel spring suspension as standard, with AIRMATIC air suspension available as an option. If your vehicle has AIRMATIC, the air springs can develop leaks over time, typically becoming noticeable after 50,000-80,000 km. A leaking strut causes the vehicle to sag on one corner, and the compressor works harder to compensate, eventually failing as well. A single air strut replacement costs approximately €800-1,200 at a dealer. If the compressor also needs replacement, add another €700-1,000. The compressor and struts together can reach €3,000-3,500 at a Mercedes dealer. Independent specialists may quote €1,500-2,500 for the same work. This risk only applies to vehicles equipped with the optional AIRMATIC suspension. Cars on steel springs are not affected.

Mercedes recalled select 2023-2024 EQE and EQS models due to a faulty 80-amp fuse that can overheat or fail, disabling connected electrical systems. In a worst case, this could lead to loss of drive power or fire risk. The recall covers replacement of the main fuse box at no cost. Mercedes reported no injuries or customer complaints related to this issue in the field before the recall. If the recall has been completed (verify with VIN), this is no longer a concern. For vehicles where it has not been completed, the repair is free at any Mercedes dealer.

Driver assistance systems occasionally report calibration errors or become completely unavailable at random starts. The system may request recalibration of window and trunk cameras. Some owners find that the features return after a restart or short drive, while others require a dealer visit for sensor recalibration. Windshield replacement (for example after a stone chip) is particularly expensive because it requires full ADAS recalibration, costing €200-500 on top of the glass itself. Genuine Mercedes windshields for the EQE SUV cost €500-800, making a total windshield replacement with calibration potentially €700-1,300. This is especially relevant because the large, steeply raked windshield is vulnerable to stone damage.