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All Symptoms

Interior or dashboard lights dim when braking or idling

Needs attention soon

lights flicker when braking · lights dim at idle

Symptom description

The interior lights, dashboard lights or headlights visibly dim or flicker when braking, idling, or using multiple electrical accessories at once.

Common causes

  • A weak or failing battery unable to keep voltage stable
  • A failing alternator not supplying enough current, especially at idle
  • A loose or corroded ground connection somewhere in the electrical system

What to check

A workshop can test battery and alternator output together in a few minutes - this is the fastest way to isolate which component is failing.

Can you keep driving?

Usually safe short-term, but get it tested soon - a failing charging system can leave you with a dead battery unexpectedly.

Ask AI for more specific detail

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Find a repair shop

Run a shop? The OBD decoder, fuse box diagrams and parts catalog are built into the Motoro dashboard. See Motoro for workshops

Descriptions are for guidance only and do not replace a workshop inspection. If you are ever unsure whether it is safe to keep driving, pull over in a safe spot.

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