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
MG4 MY23: Significant coolant level drop over a short period; check for leaks
The coolant level is below MIN when checked cold, or drops significantly over a short period.
MG4 MY23: Significant coolant level drop over a short period; check for leaks
Symptoms
- The coolant level is below MIN when checked cold, or drops significantly over a short period. [1]
Possible causes
- The manual requires service inspection when the level drops significantly over a short period and leakage is suspected; it does not identify the pump, seals or housing as a confirmed root cause. [1]
Checks
- Observe the levels in both the high-voltage battery and electric drive expansion tanks only when the cooling system has cooled and the vehicle is on level ground; do not open pressure caps while hot. Refer a short-term drop to an MG service provider for leak checks. [1]
What to do
- Use the specified coolant for the corresponding vehicle configuration; investigate the cause of persistent leakage first. Do not treat topping up as leak repair, and do not provide specifications or OE numbers without a source. [1]
Applicability and limits
- Only applies to the MG MG4 configuration in the source; model year 2023. Check the traction battery and electric drive cooling circuits separately; do not mix unknown specifications; the vehicle model database is empty and no model is linked. Do not extend to other models. Scope: unknown [1]
- Check the traction battery and electric drive cooling circuits separately; do not mix unknown specifications
Related part categories
- Fluids / Coolant / Cooling system [1]
Sources
[Source 1] MG4 MY23 English-language owner manual from the official European website — PDF/printed pp.292–293, Cooling System / Coolant Check and Top Up (accessed 2026-11-01)
https://cdn.mgmotor.eu/manuals/EU-MG4-MY23_Owner-Manual-20230907_compressed.pdf
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