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Fault diagnosis

MG4 MY23: Please Slow-charge the Vehicle message appears

The instrument display indicates that slow charging is required.

By Funbyautoparts Editorial2 min read
Difficulty: IntermediateContent type: Diagnostic Guide

MG4 MY23: Please Slow-charge the Vehicle message appears

Symptoms

  • The instrument display indicates that slow charging is required. [1]

Possible causes

  • The manual explains that this message appears after a long period without equalisation charging; equalisation brings the charge states of the individual cells into alignment. [1]

Checks

  • Verify the message text and follow the slow charging requirements for this configuration; before charging, check that the equipment is undamaged, the connector interface is dry and the vehicle power is off. [1]

What to do

  • Complete a full slow charge including the equalisation stage; the time varies with battery configuration and temperature. This entry makes no uniform commitment on charging duration and does not infer cell damage from the message. [1]

Applicability and limits

  • Source limits: MG MG4, model year 2023, European MY23 English-language manual. For inspection guidance only; related parts do not constitute a recommendation to replace them. No vehicle model is linked; do not assume applicability to other models of the same brand. Scope: unknown [1]

Related part categories

  • Traction battery and battery management system [1]

Sources

[Source 1] MG4 MY23 English-language owner manual from the official European website — PDF/printed pp.181–182, 185, Slow Charging / Equalisation Charging (accessed 2026-11-01)
https://cdn.mgmotor.eu/manuals/EU-MG4-MY23_Owner-Manual-20230907_compressed.pdf

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