A Practical Guide to the Alternator for 2010-2019 Ford Taurus Models
Here is what you need to know before buying and replacing the alternator in your sixth-generation Ford Taurus.
- Diagnose the entire charging system; a P0620 code or battery light doesn't always mean a bad alternator.
- Replacement difficulty varies greatly; the job is much harder on 3.5L EcoBoost (SHO) models than on the standard 3.5L V6.
- Match the amperage of the new alternator to your vehicle's original unit (e.g., 175A, 200A).
- For reliability closest to OEM, choose a new Denso unit. Other aftermarket brands offer value but have mixed reviews.
Is Your Taurus Alternator Failing?
A bad alternator can leave you stranded. Recognizing the warning signs early can save you from a tow truck. Unlike some parts that fail suddenly, an alternator usually gives clues that it's on its way out.
🎬 Watch: A breakdown of common bad alternator symptoms and fixes.- Battery Warning Light: The most obvious sign is the battery-shaped light on your dashboard. This light indicates a problem with the charging system, which could be the alternator, battery, or related wiring.
- Dimming or Flickering Lights: If your headlights and interior lights dim, especially at idle, and brighten when you rev the engine, the alternator is likely struggling to provide consistent power.
- Slow or Malfunctioning Electronics: Power windows that move slowly, a radio that cuts out, or erratic behavior from the A/C system can all point to insufficient voltage from a weak alternator.
- Whining or Grinding Noises: A high-pitched whine or a grinding sound from the engine bay can indicate a bad bearing inside the alternator.
- Dead Battery: If your car is hard to start or the battery dies repeatedly, the alternator may not be recharging it properly. The car will run off the battery's power for a short time until it is completely drained.
A Note on the P0620 Trouble Code
The 2010-2019 Taurus uses a PCM-controlled charging system. If you see a check engine light, a common related code is P0620 (Generator Control Circuit Malfunction). This code means the computer has detected a problem, but it doesn't automatically condemn the alternator. The fault could be the alternator itself, a bad connection, damaged wiring, or even a blown fuse in the power distribution box. A full system diagnosis is recommended 🎬 See this guide on how to test an alternator yourself. before replacing parts.
Choosing the Right Aftermarket Alternator
When shopping for a new alternator, you'll find OEM and various aftermarket options. The quality and price can vary significantly.
OEM vs. Aftermarket Quality
Motorcraft is Ford's official parts brand and the original equipment (OE) on your Taurus. It guarantees a perfect fit and original performance, but it's the most expensive option. For this vehicle, a high-quality aftermarket part can offer similar performance for less money.
Aftermarket brands can be grouped into tiers:
- Premium Aftermarket (Denso): Denso is an original equipment manufacturer for many automakers and has a reputation for exceptional quality in its aftermarket parts. They are often considered the best choice after the OEM part, providing long-term reliability.
- Standard Aftermarket (Remy, WAI Global, BBB Industries, MPA): These brands offer a balance of value and quality. Reviews are often mixed. Some users report years of good service, while others have experienced premature failures like noisy bearings or lower-than-advertised output. WAI Global and BBB Industries are large manufacturers that also supply parts for many auto parts store brands. Buying from a source with a good warranty is a smart move with these brands.
Cost of Replacing a Ford Taurus Alternator
The total cost depends on the part you choose and who does the work. The replacement is more difficult on models with the 3.5L EcoBoost engine (SHO), which increases labor time and cost.
| Part/Service | Estimated Cost |
|---|---|
| New OEM (Motorcraft) | $420 - $630 |
| New Aftermarket | $219 - $460 |
| Remanufactured | $150 - $300 (plus core charge) |
| Shop Labor | $150 - $400 |
Frequently Asked Questions
Can I drive my Taurus with a bad alternator?
No. Your car will only run on battery power for a very short time—often just a few miles. Once the battery is drained, the engine will stall, and you will be stranded. It is not safe to drive with a known bad alternator.
Should I buy a new or remanufactured alternator?
New aftermarket alternators from reputable brands like Denso are often the best balance of quality and price. Remanufactured units can be a good budget option, but quality can be inconsistent. If you choose a remanufactured part, get one from a trusted brand with a lifetime warranty.
Why is the replacement so much harder on the Taurus SHO?
On the 3.5L EcoBoost V6 engine found in the SHO, the alternator is buried low in the engine bay. Access requires removing the cooling fan assembly, which also means you have to drain and refill the engine coolant, making the job significantly more complex and time-consuming.
🎬 Watch: Step-by-step alternator removal for the Taurus SHO model.Do I need a special high-output alternator?
Unless you have added significant electrical accessories like a powerful aftermarket stereo system with large amplifiers, a high-output alternator is not necessary. For a stock vehicle, an alternator that matches the original equipment's amperage rating is the correct choice.
Helpful Videos
Technical Specifications
OEM Part Numbers: DG1Z-10346-C GB5Z-10346-C DG1Z-10346-F
Amperage ratings vary by model and trim, commonly including 175A, 200A, and 220A. The system is controlled by the Powertrain Control Module (PCM) via a 3-pin connector.
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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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