A Guide to the Ignition Switch for the 2006-2011 Mercury Milan
If your Milan has trouble starting or stalls unexpectedly, the ignition switch could be the culprit.
- An intermittent no-start where it takes multiple key turns to work is a primary symptom of a failing ignition switch.
- Engine stalling can be the ignition switch, but on 2010-2011 models, a known throttle body issue is a more likely cause.
- Replacing only the electrical ignition switch is a straightforward DIY job that does not require key reprogramming.
- A failing switch is a major safety hazard if it causes your car to stall while driving.
Is Your Mercury Milan Ignition Switch Failing?
A bad ignition switch in a 2006-2011 Mercury Milan can be frustrating and unsafe. Symptoms often start small but can leave you stranded. Because these issues can sometimes be confused with a bad battery or starter, it's important to recognize the specific signs of a failing switch.
🎬 Watch: A breakdown of common ignition switch failure symptoms.Common Failure Symptoms:
- Intermittent No-Start: You turn the key and nothing happens, or you just hear a single click. After a few tries, the car might suddenly start up normally. This is one of the most common signs of worn internal contacts.
- Stalling While Driving: The engine may shut off without warning while you are on the road. The dashboard lights might flicker or go dark, and you'll lose power steering and brakes. This is a critical safety failure.
- Key Is Hard to Turn or Gets Stuck: While sometimes related to the mechanical lock cylinder, a binding or damaged ignition switch can make it difficult to turn or remove the key.
- Accessories Don't Work: The radio, climate control, or power windows may not turn on when the key is in the "Accessory" or "ON" position, or they may cut out intermittently.
Important Note on Stalling for 2010-2011 Models
While a failing ignition switch can cause stalling, many 2010-2011 Mercury Milan and Ford Fusion models experienced stalling due to a faulty electronic throttle body. Ford issued an extended warranty (Customer Satisfaction Program 13N03) to cover this specific issue for 10 years or 150,000 miles. If your Milan is stalling, it is crucial to determine if the throttle body is the actual cause before replacing the ignition switch.
🎬 See how to replace a faulty electronic throttle body.Choosing the Right Aftermarket Ignition Switch
There are no widespread recalls for the ignition switch on the 2006-2011 Mercury Milan. The original factory part provides good service life, but when it fails, a quality aftermarket part is a cost-effective solution. Aftermarket brands can be grouped into tiers based on reputation and quality.
Premium Aftermarket Brands:
- Standard Ignition (SMP): Often considered an OE-quality supplier, Standard Motor Products manufactures parts that meet or exceed original specifications. They are known for robust testing and high-grade materials, making them a top-tier choice for reliability.
- Rostra Powertrain: Rostra is an OE manufacturer for major car brands, including Ford. Their reputation for producing high-quality electronic components makes them a trusted, premium option, even if they are more known for transmission parts.
Quality Mid-Range Brands:
- Dorman: Dorman is a well-known aftermarket brand that often engineers its parts to correct known flaws in the original factory design. They offer a reliable balance of quality and value, with generally positive reviews for fit and function.
Economy / Standard Brands:
- True Tech / Replacement: These brands provide a budget-friendly solution to get your car back on the road. They are a practical choice if cost is the primary concern, though specific information on their long-term durability is less available compared to more established brands.
Ignition Switch Replacement Cost for Mercury Milan
| Part Type | Estimated Cost |
|---|---|
| New Aftermarket Part | $37 - $87 |
| New OEM Part (Motorcraft) | $70 - $130 |
| Shop Labor | $100 - $225 |
| Total Estimated Cost (Aftermarket) | $137 - $312 |
Pro Tip: Lock Cylinder vs. Ignition Switch
The ignition switch is purely electrical. The lock cylinder is the mechanical tumbler your key fits into. If your only problem is a sticky or worn-out key, you may only need a new lock cylinder. If you have electrical symptoms like stalling or a no-start, the switch is the likely culprit. Replacing only the electrical switch does not require new keys or reprogramming.
Frequently Asked Questions
Can I replace the ignition switch myself?
Yes, this is a DIY-friendly job for someone with basic tools. The process involves removing the plastic shrouds around the steering column to access the switch, which is typically held on by small screws or clips. The difficulty is low to moderate.
🎬 Follow this step-by-step ignition switch replacement walkthrough.Do I need to reprogram my keys after replacing the ignition switch?
No. If you are only replacing the electronic ignition switch, your original keys will work exactly as before with no reprogramming needed. Reprogramming is only necessary if you replace the mechanical lock cylinder assembly which comes with new, different keys.
My car clicks but won't start. Is it the ignition switch or the starter?
It could be either, but they often make different sounds. A rapid clicking noise often points to a weak battery that can't supply enough power to the starter. A single, solid click when you turn the key often means the ignition switch is working, but the starter motor itself has failed. An ignition switch failure can also result in a single click or complete silence.
Why does my car start and then immediately die?
This can be a symptom of a bad ignition switch. The switch may make contact in the 'START' position but fail to maintain power to the ignition and fuel systems when the key returns to the 'ON' position. It can also be related to the vehicle's anti-theft system (PATS) if it doesn't recognize the key.
Helpful Videos
Technical Specifications
OEM Part Numbers: 6G1Z-11572-A SW6262
The ignition switch for the Mercury Milan is a 7-terminal electrical switch mounted to the ignition lock cylinder housing within the steering column.
We Have This Part in Stock
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.
- Mercury Milan:
- 🎬 Helpful Videos
- 🛍️ Shop This Part
- Is Your Mercury Milan Ignition Switch Failing?
- Common Failure Symptoms:
- Important Note on Stalling for 2010-2011 Models
- Choosing the Right Aftermarket Ignition Switch
- Premium Aftermarket Brands:
- Quality Mid-Range Brands:
- Economy / Standard Brands:
- Ignition Switch Replacement Cost for Mercury Milan
- Pro Tip: Lock Cylinder vs. Ignition Switch
- Frequently Asked Questions
- 🎟️ Get 5% Off