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2018 Toyota Highlander Alternator
The alternator charges the battery and powers the electrical system while the engine runs in your 2018 Toyota Highlander.
Compare alternator for your Highlander in the appSigns it may need replacing
- A battery or charging warning light
- Dim or flickering lights
- A battery that keeps going flat, or a whining noise
At a glance
| Part | Alternator Electrical & Charging › Alternator & Charging |
|---|---|
| Typical life | Often 100,000 to 150,000 miles. |
| DIY difficulty | Intermediate Disconnect the battery first. Access varies a lot between engines. |
Lifespans and difficulty are general. They vary with the engine, trim, driving and climate, and your owner's manual and a qualified mechanic should have the final say.
Before you buy
Have the battery and alternator tested before buying; a bad battery is often mistaken for a bad alternator. Remanufactured units are common.
Confirm the part fits your exact 2018 Toyota Highlander by checking your VIN, engine size and trim with the seller. The Highlander was sold with different options across the 2018 model year, and a part that fits one build may not fit another.
Where to buy a 2018 Toyota Highlander alternator
These searches are set up for your vehicle and the part.
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