Ford Mustang Mach-E

The Mach-E ER AWD is directly affected by Ford Recall 23S56: rapid DC charging and high-performance operation can overheat the HV contactors. 2021–2022 models must be checked for recall status.

Symptoms: HV battery warning light, vehicle has no drive, charging fault

Main HV battery contactors can overheat during frequent DC fast charging and full-performance use. All ER AWD variants before May 2022 affected; free replacement of the battery switch box.

Symptoms: Powertrain fault warning, power reduction, vehicle will not start after DC charging.

Ford recalled 2021–2022 Mach-E vehicles due to possible overheating of the HV battery main contactors. Repeated DC fast charging or performance driving can deform the contacts. Fix: OTA or dealer software update.

Symptoms: Vehicle suddenly loses drive power while moving; difficulty starting after DC fast charge; warning messages in instrument cluster after multiple hard acceleration runs.

The Mach-E ER AWD also shows the well-known 12V discharge issue. With long periods of standing without a charging connection, the 12V battery can drain to the point where the vehicle becomes unresponsive.

Symptoms: Electrical system discharge warning, no start, no response to key fob

The Mach-E without a heat pump suffers greater range loss in winter than competitors (Tesla, VW) because the battery is heated via resistive elements. Pre-conditioning before charging is recommended.

Symptoms: Significant range loss in winter (-30 to -40%), slow charging in cold weather

The Mach-E's 12V auxiliary battery is only recharged when the HV battery is being charged. With long periods of standing without HV charging, it discharges. The software charging system is insufficient to maintain the 12V battery fully.

Symptoms: Warning 'Service required due to electrical system discharge' in FordPass app; vehicle shows 'System Off to Save Battery'; vehicle will not start.

The Mach-E's 12-volt auxiliary battery doesn't charge during HV charging. In cold conditions in particular it can fully deplete and lock the vehicle — doors, control units and start no longer function.

Ford recalled Mach-E vehicles because the main contactors (relays) of the high-voltage battery could overheat during repeated DC fast charging or full power demand, leading to malfunctions.

Ford recalled over 315,000 Mach-E vehicles (model years 2021–2025): if the 12V battery drops below 8.4V, the electronic door latches (e-Latch) lose power. Passengers can become trapped. A PCM software update resolves the issue.

Consumer Reports withdrew its recommendation for the Mach-E due to poor reliability. Frequent software faults affect charging, apps, ADAS systems and climate control. OTA updates help but don't permanently resolve all issues.

Mach-E owners report unreliable AC charging. Charging stops without error messages or doesn't start at all. The cause is partly a software fault in the on-board charger (OBC), partly failed charging control units. Ford released several OTA fixes.