This content was compiled automatically and has not yet been reviewed by a technician. For reference only.
For reference only. Always confirm part numbers and procedures for your specific vehicle.
Fault diagnosis
MG HS: Anti-theft warning light flashing; check the remote key battery
The anti-theft warning light flashes and indicates a low key battery.
MG HS: Anti-theft warning light flashing; check the remote key battery
Symptoms
- The anti-theft warning light flashes and indicates a low key battery. [1]
Possible causes
- The manual links this flashing condition to a low remote key battery, separately from failure to detect a valid key. [1]
Checks
- Check the precise warning light behaviour, key battery charge and interference conditions. [1]
What to do
- Replace the battery according to the actual vehicle requirements and confirm that the key works; do not proceed directly to replacing the entire key. [1]
Applicability and limits
- Only applies to the English manual from the official European website and to the corresponding HS configuration among the combustion-engine configurations described; the manual date is not treated as an applicable model year. No actual vehicle model has been linked. Do not extend to models with the same name, other powertrains or other markets. Scope: unknown [1]
- Only applies to the specific configuration in the cited manual; do not assume applicability to all vehicles with the same model name
Related part categories
- Low-voltage system / Smart key battery / Keys and body electrical system [1]
Sources
[Source 1] MG HS English Owner's Manual from the Official European Website (file identifier 01-2023) — PDF pp.35 / printed pp.19, Anti-theft System Warning; PDF pp.151–152 / printed pp.135–136, Key Battery (accessed 2026-11-01)
https://cdn.mgmotor.eu/manuals/MG-HS-owner-manual-01-2023.pdf
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