Why does my Jaguar E-Pace keep going dead or show a charging system fault?

Short answer: If your E-Pace keeps going dead with a 'charging system fault', the DC-DC converter on mild-hybrid models is the usual suspect, and recall 26V248000 covers certain 2021-2022 cars. If there's no warning, keep the key away from the car, lock it, and have the battery tested.

Symptom: The car is dead in the morning, won't unlock, shows a 'charging system fault' or battery light, or goes flat again a day after charging.

What to check first

1. Run your VIN at nhtsa.gov/recalls for 26V248000.
2. Get the codes read. A dealer tech said not to replace the starter-generator without them.
3. Have the battery load-tested. A load test puts a real demand on the battery. A plain voltmeter reading can look fine on a battery that can't deliver power.
4. Lock the car and keep the key well away from it.
5. Note whether the battery light stays on while driving.

Likely causes

1. Failed DC-DC converter (mild-hybrid models). On the 2.0 mild hybrid (MHEV), the DC-DC converter turns the 48-volt hybrid system's power into 12 volts to charge the normal battery. If it fails, the 12V battery stops charging and the car goes dead. Recall 26V248000 covers this on certain 2021-2022 E-Pace.
2. Key fob kept near the car or the car left unlocked. Owners said the electronics stay awake looking for the key if it's close by or the car is unlocked.
3. Worn 12V battery. An old battery that's been drained flat several times may not hold a charge.

What it usually costs

A UK garage quoted one owner £3,200 to replace the starter-generator (BiSG, the mild hybrid's combined starter and alternator), which a JLR tech said rarely fails. A JLR tech estimated about 3 hours of labor plus around £1k for the DC-DC converter. Recall work is free.

Is it safe to keep driving?

Not with a 'charging system fault'. The recall filing says a failed DC-DC converter can lead to a complete loss of drive power. Get it checked before you rely on it.

DIY or shop?

Battery charging and key habits are DIY. The DC-DC converter sits under the car and is a shop job.

Recalls, bulletins and complaints in plain words

• Recalls: NHTSA lists recall 26V248000 for certain 2021-2022 E-Pace, 2020 Discovery Sport and many other mild-hybrid (MHEV) Jaguar and Land Rover models: under heavy electrical demand the DC-DC converter can overload and fail, which stops the 12V battery from charging and can lead to a complete loss of drive power. Dealers will update the software for free once the final fix is ready (interim owner letters went out June 17, 2026). NHTSA also lists 26V599000 under the same DC-DC converter part. If your car is part of a recall, the dealer fixes it for free. Check your VIN at nhtsa.gov/recalls.
• Plain words: The complaint count below shows how often owners reported problems that mention these words to NHTSA. A count is not proof of a defect. NHTSA's complaint lookup returned no data for 2018, and the recall lookup returned no data for 2019-2020.
• NHTSA complaints: 10 keyword-matched complaints for Jaguar E-Pace 2018–2024 (of 14 unique complaints queried, NHTSA complaints API by model year, queried 2026-11-04; keywords: battery, dead, charging, charge, won t start, no start, electrical, stop safely, lost power, loss of power) (NHTSA returned no data for 3 model-year queries). This counts complaints that mention these words. It is not a defect finding.

What owners report

• In Jaguar E-Pace dead on the drive! on Reddit r/Jaguar, a 2021 E-Pace 2.0 MHEV owner with 30k miles found it completely dead two mornings in a row, with a 'charging system fault' on the dash. A local shop blamed the starter-generator, but a JLR master tech said dealers change hundreds of DC-DC converters and almost never the starter-generator. He guessed about 3 hours of labor plus around £1k for the part. A local garage had quoted £3,200 (about £2,800 for the part plus £400 fitting) to replace the starter-generator.
• In Jaguar E-pace on Reddit r/Jaguar, an owner's E-Pace went dead after two days parked. Others said the battery light kept coming back on a 2022 even after a new battery, and that leaving the key fob in or near an unlocked car keeps the electronics awake. Several owners fixed it by locking the car and keeping the fob farther away.

Quick tip

Read the codes before you buy parts. On a mild hybrid with a charging fault, ask about the DC-DC converter and the recall first.

Vehicle focus: Jaguar E-Pace, 2018-2024 (DC-DC converter issues apply to mild-hybrid models).

Safety / mechanic note

Losing drive power or lights in traffic is dangerous. The 48-volt system on mild hybrids can deliver a strong shock. Verify with a mechanic.