Introduction
This article provides guidance on diagnosing and repairing common alternator-related problems in Toyota Prado vehicles, specifically addressing situations where the battery is not charging, and warning lights illuminate on the dashboard.
Problem
The common symptoms indicating a potential alternator issue include:
- Dashboard warning lights illuminating.
- Battery not charging while the engine is running.
- Vehicle running solely on battery power, leading to eventual shutdown.
- Voltage drop observed when testing with a multimeter after starting the vehicle.
Solution
A common cause for these issues is worn alternator brushes. Replacing the brushes can restore the alternator’s functionality.
REPAIR: Replace the worn alternator brushes.
- Remove the alternator from the vehicle.
- Disassemble the alternator to access the brushes.
- Remove the rear cover.
- Replace the worn brushes with new ones.
- Reassemble the alternator and reinstall it in the vehicle.
Relevant Parts
- Alternator Brushes (Landcruiser 80 series brushes are reported to be compatible).
Additional Notes
- A diagnostic unit may not report specific fault codes related to this issue, with the dashboard lights being the primary indicator.
- Driving with minimal electrical load (turning off stereo, AC, headlights) can extend the battery life temporarily, allowing for driving to a repair location.
This technical summary was auto-generated based on recovered archives. Do not rely on its factual accuracy. Refer to the original thread. Source: View Original Conversation
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