A Ford Expedition Owner's Guide to the Alternator (2008-2015)
If your Expedition's lights are dimming or you see a battery warning, your alternator might be the problem.
- The alternator replacement on a 2008-2015 Expedition is a DIY-friendly job that can be done in under two hours with basic tools.
- Common failure signs include a dashboard warning light, dimming headlights, and a whining noise from the engine.
- Before buying, confirm if your Expedition needs a 150-amp or 175-amp alternator, as both were common.
- Motorcraft (OEM) offers the best quality, but quality aftermarket brands like Remy and MPA provide a good balance of cost and reliability.
Is My Expedition's Alternator Failing?
An alternator rarely fails without giving you some warning signs. For the 2008-2015 Expedition, these symptoms are usually very clear. If you notice any of these, it's time to get your charging system checked.
🎬 Watch: How to tell if your alternator is failing- Dashboard Warning Light: The most obvious sign is the battery symbol lighting up on your dash, or a "Check Charging System" message appearing. This is your truck's computer telling you the battery isn't being charged correctly. 🎬 Learn how to test an alternator quickly and simply
- Dim or Flickering Lights: You might notice your headlights and interior dome lights are dimmer than usual, or that they flicker. They may also get brighter when you press the gas pedal and dim when you're idling.
- Slow Electrical Accessories: If your power windows seem slow to go up, or your radio and other electronics are acting strange, it could be due to a lack of consistent power from a failing alternator.
- Whining or Grinding Noise: A high-pitched whining or a grinding sound coming from the engine area can be caused by worn-out bearings inside the alternator.
- Dead Battery: While a battery can die on its own, a bad alternator can also be the cause. If the alternator isn't recharging the battery as you drive, you may have trouble starting the engine or find yourself with a dead battery repeatedly.
Choosing the Right Aftermarket Alternator
When replacing the alternator on your Expedition, you have a choice between the original Ford part (Motorcraft) and several aftermarket brands. The focus here is on new aftermarket options.
Brand Quality Tiers
| Tier | Brands | Summary |
|---|---|---|
| OEM / Premium | Motorcraft (New) | Motorcraft is Ford's own brand, offering a guaranteed fit and the highest quality. These parts are designed specifically for your Expedition's electrical demands and often have better components for longevity and quiet operation. While it's the most expensive option, it's the benchmark for performance. |
| Quality Aftermarket | Remy, MPA (Quality-Built) | These brands are known suppliers in the aftermarket. MPA (Motorcar Parts of America) is a large North American company with a reputation for strict testing. Remy is also a well-known brand, though online owner reviews are mixed; some report long life while a few have seen premature bearing failures. These are a solid middle-ground choice. |
| Value Aftermarket | BBB Industries | BBB Industries produces a wide range of aftermarket parts. Like many value-focused brands, quality can be inconsistent according to forum discussions, with some owners reporting early failures. They often come with good warranties, but you might be trading a lower price for the risk of doing the job more than once. |
Pro Tip: Check the Amperage. The 2008-2015 Expedition typically uses a 150-amp or 175-amp alternator. Before buying, confirm the amperage of your original unit. If you have added significant electrical accessories like a powerful sound system or extra lighting, you might consider a high-output aftermarket alternator.
Cost of Replacing a Ford Expedition Alternator
The total cost depends on whether you do the work yourself or hire a professional. The replacement is considered fairly easy for a DIYer.
Estimated Costs (2008-2015 Expedition)
| Item | Estimated Cost |
|---|---|
| New Aftermarket Part | $167 - $573 |
| New OEM (Motorcraft) Part | $375 - $642 |
| Professional Shop Labor | $130 - $190 |
| Total Professional Job (Aftermarket Part) | $297 - $763 |
Frequently Asked Questions
Is it hard to replace the alternator on a 2008-2015 Expedition?
No, it is considered a relatively easy DIY job. The alternator is located at the top front of the engine and is accessible after removing the air intake tube. The process involves loosening the serpentine belt, removing a few bolts, and disconnecting the wires. 🎬 See this step-by-step alternator replacement walkthrough Many owners complete the job in 1-2 hours with basic tools.
Do I need to replace the serpentine belt at the same time?
It's a good idea. The belt has to be removed to get the alternator off, so you're already doing most of the labor. Inspect the belt for cracks, fraying, or glazing. If it shows any signs of wear, replacing it at the same time is a smart and inexpensive preventative measure.
What are the torque specs for the alternator bolts?
While specs can vary slightly, one DIY video for a similar model showed the main mounting bolts being torqued to 25 Newton-meters (Nm) and the smaller bracket bolts to 10 Nm. The main battery cable nut on the back of the alternator is typically torqued to around 17 Nm. Always confirm specs for your specific year if possible.
Are there any recalls for the alternator on this Expedition?
Searches of the National Highway Traffic Safety Administration (NHTSA) database did not show any specific recalls or widespread issues for the alternator on the 2008-2015 Ford Expedition.
Helpful Videos
Technical Specifications
OEM Part Numbers: FU2Z-10V346-NRM
Voltage: 12V, Amperage: 150A or 175A (most common), Pulley: 6-Groove, Rotation: Clockwise.
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The information in this article is provided for general reference and educational purposes only. Vehicle specifications, procedures, and part compatibility can vary by production date, trim level, and region. Always consult your vehicle's factory service manual and verify part numbers before purchasing or performing repairs. Safety-critical components such as airbags, seat belts, and braking systems should be installed by a qualified professional.
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