Mustang Mach-E (2021-present)

1. 1

   Primary
   REQUIRES A TOOL — there is no tool-free disable. Ford's preferred method is FDRS (Ford's diagnostic tool): run the Zero Voltage Confirmation routine, then open the de-energizing connector (release CPA clip, depress tab, hold open with a tool), then complete the routine to verify the HV system is de-energized. The 'manual' fallback STILL needs a scan tool to run a BECM self-test and read DTCs. If your yard has no FDRS or BECM-capable scan tool, treat the vehicle as LIVE and bring in a qualified EV tech.

   De-energizing connector is reached behind the LEFT-HAND (LH) UNDERHOOD TRIM PANEL (front compartment / under the hood) — Ford's text says to remove the LH underhood trim panel to access the connector. The HV battery LV/HV connectors are at the battery underbody. Verify exact positions on-vehicle.

2. 2

   Backup
   Manual De-Energizing (scan tool required) — Ford says to use this 'only when a Ford-specific diagnostic tool is not available.' Still requires a scan tool for the BECM self-test.

Note
Per Ford's official 2021 Mustang Mach-E Battery Removal Guide (the document Ford wrote FOR dismantlers and salvage yards), the disable method is the SERVICE DISCONNECT, not a cut. Do NOT cut any orange-jacketed high-voltage cables. A TOOL IS MANDATORY. Ford gives two depower paths — FDRS (Ford's tool) and "Manual De-Energizing" — and BOTH require a tool. The manual method still requires a scan tool capable of a BECM self-test. Ford also restricts HV service to "qualified personnel." If your yard has no FDRS or BECM-capable scan tool, there is NO Ford-sanctioned way to depower this vehicle yourself — treat it as live and call a qualified EV technician. DTC STOP-GATE (Ford: do NOT remove the HV battery cover if any of these exist): - BECM DTC P0AA6:00 diagnosed as an internal fault with the HV battery; or - P0AA1:00 AND P0AA4:00; or - P0D0F:00 AND P0AA4:00. After the BECM self-test, Ford also routes you to the WSM (section 414-03 / 414-03A) if P0AA1:00 AND P0AA4:00, or P0D0F:00 AND P0AA4:00, are present. If any of these conditions exist, do not proceed — refer to a qualified tech. Manual de-energize sequence (Ford): disconnect EVSE charger; ignition ON without brake (Accessory mode); run BECM self-test with a scan tool and honor the DTC stop-gates; ignition OFF; remove LH underhood trim panel; release CPA clip, depress tab and hold the connector open with a tool; disconnect the LOW-voltage connector at the HV battery, then the HIGH-voltage connector at the HV battery; WAIT A MINIMUM OF 5 MINUTES. CRITICAL — two separate Ford warnings: 1. After the service disconnect is opened, the HV system may RETAIN dangerous voltage for a short time. WAIT 5 MINUTES before any service. 2. Opening the service disconnect does NOT dissipate voltage INSIDE the pack. The pack remains live and dangerous internally — never open or breach the pack. Also: NEVER reconnect the service disconnect with a HV cover removed (live points are exposed under the cover). Move/position the vehicle in NEUTRAL on the hoist.

12V location: Not explicitly stated in the OEM battery-removal text — verify on-vehicle (commonly the front compartment / under-frunk area on this vehicle, but Ford's source does not state the location). Verify

Ford guide directs disconnecting the 12V battery BEFORE servicing the DC-AC inverter or AC powerpoint to prevent HV shock, and during battery removal directs removing the stud and positioning the negative battery cable aside, then insulating the cable terminal with tape. Ford does NOT state the 12V battery location in this document — confirm on the vehicle / owner's manual.

Pack location: Floor-mounted underbody, mid — under the vehicle floor between the axles, behind the front and rear underbody shields that Ford's BRG removes to drop the pack. (The exact phrase 'between the front and rear axles' is a layout inference from the front/rear shield removal steps, NOT a verbatim Ford quote in this Battery Removal Guide.)1 source· 1×

Pack chemistry: Lithium-ion (Ford calls it the Lithium-Ion High Voltage Battery pack, Li-Ion HVB)

HV cable color:Orange

Do not cut:

• Orange-jacketed HV cables (entire routing — orange harness tape / orange covering); Ford says do not cut or sever orange cables
• HV battery pack footprint (entire underbody between the axles; pack case and front/rear underbody shields)
• HV battery internals / pack case (live and dangerous even after service disconnect — never breach)
• Stored-gas inflators (airbag canisters) — SRS component shown on Ford-authored Euro NCAP Rescue Sheet
• Seat-belt pretensioners / retractors — SRS component shown on Ford-authored Euro NCAP Rescue Sheet
• Airbags and their roof-rail / pillar routing (the Ford Rescue Sheet shows a generic 'Airbag' symbol; specific types such as side-curtain, seat-mounted side, front, and knee are typical EV SRS, not individually enumerated in a legible Ford source — verify on-vehicle)
• DC-AC inverter / AC powerpoint (HV present — disconnect 12V before servicing)

Reinforcement (UHSS):

• A-pillars
• B-pillars
• Roof rails
• Rocker panels (battery pack perimeter)
• Cross-car beam (typical EV structure; not labeled on the legible Ford source)
• Front and rear crumple zones (typical hardened-steel areas; not labeled on the legible Ford source)

Pack piercing risk: The HV pack spans the underbody between the front and rear axles, behind front and rear underbody shields. Any underbody tool, fork-truck tine, or jack stand that contacts or pierces the pack risks an internal short and thermal runaway. Ford warns the pack remains internally live even after the service disconnect is opened — never open or breach the pack case.

Isolate damaged vehicle 50 ft from exposures.

NHTSA reports no active recalls for this make/model/year range.

Source: NHTSA Recalls (live)

With the vehicle in NEUTRAL, hoist on Ford's designated hoist pads — Ford BRG specifies "hoist pads ... special tool number 501-424" with marked front and rear hoist-pad locations (BRG pages 1-9/1-10). To drop the pack, Ford uses a powertrain lift table (Ford Special Service Tool 014-3KLIFTTABLE, BRG page 1-18), applying only enough pressure to support the battery. The HV battery occupies the underbody between the axles behind front/rear underbody shields — do NOT lift on the pack case or underbody shields, and do not pierce the pack tray from below.

Coolant: Liquid coolant (Ford BRG drains coolant and disconnects coolant hoses from the HV battery; the BRG says 'coolant', not 'glycol' — glycol type is general EV knowledge, not stated in this guide)

Electrolyte color: Clear to pale yellow (vents as vapor when cells overheat) — NOT stated in this Ford BRG; general Li-ion knowledge

If burning, toxic vapors:

• Hydrogen fluoride (HF)
• Carbon monoxide
• Volatile organic compounds (electrolyte solvents)
• Nickel / cobalt / manganese / lithium / copper / aluminum oxides

Ford Mustang Mach-E Emergency Response Guide (PDF) →

Last verified 2026-05-31 · mirror

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