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Lincoln · Known Issues

2011 Lincoln MKZ Problems: 4 Known Issues

2011 model year · NHTSA recalls, manufacturer TSBs, and owner forum reports · Updated September 2026

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Issue summary

According to Au7o's research across NHTSA recalls, manufacturer TSBs, and owner forum reports, the 2011 Lincoln MKZ has 4 documented known issues, with 3 rated critical. The most serious are MKZ 3.5L Duratec V6 Internal Water Pump Leak ($1,500-$4,500 repair), MKZ EPS Loss of Assist (NHTSA Recall 15V-340 / Ford 15S18) ($0-$0 repair) and Takata Airbag Inflator Rupture (Driver and Passenger). Across all issues with published estimates, repair costs range from $300 to $4,500. DIY maintenance guides at au7o.io.

In This Article

  • MKZ Cooling1
  • MKZ Steering1
  • MKZ Safety/Recalls1
  • MKZ Transmission1
  • Recalls27
  • FAQ
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In This Article

  • Cooling1
  • Steering1
  • Safety/Recalls1
  • Transmission1
  • Recalls27
  • FAQ

All 4 Known Issues

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ALL YEARS20202019201820172016201520142013201220112010200920082007

On the 2007-2012 Lincoln MKZ 3.5L Duratec V6, the 3.5L Duratec V6 in 2007-2012 MKZ (and shared Edge, Taurus, Flex, Explorer) uses a water pump driven internally by the timing chain. When the pump shaft seal fails, coolant leaks into the oil pan rather than externally — owners often see no leak before catastrophic oil contamination. Symptoms: milky oil, white smoke, mysterious coolant loss, eventual bearing failure.

This issue also affects: Ford Bronco Sport, Ford Edge, Ford Excursion

Common Symptoms

  • milky oil
  • white smoke
  • mysterious coolant loss
  • low coolant warning

How to Fix

Internal water pump replacement is a labor-intensive job (timing cover off) — $1,500-$2,500 at independent, $2,500-$3,500 at dealer. Check the coolant level monthly; check the oil for milky discoloration at every change. Some owners replace proactively at 100,000 miles to avoid engine damage.

What you need to fix it

Only diagnosis- and fitment-reviewed repair parts are linked here.

  • Genuine Ford AA5Z-8501-F internal water pump assembly
    OEMAA5Z-8501-F

    Replace a confirmed early/single-tooth 3.5L MKZ internal water pump after VIN and geometry confirmation Fitment/availability: Live In Stock/Add to Cart page identifies OEM AA5Z-8501-F and explicitly lists 2007-2012 Lincoln MKZ 3.5L.

    eToolCart
  • Genuine Ford AT4Z-8501-A dual-tooth internal water pump assembly
    OEMAT4Z-8501-A

    Replace a confirmed dual-tooth 2011-2012 MKZ 3.5L internal water pump Fitment/availability: Live Ships in 1 Business Day/Add to Cart page identifies AT4Z-8501-A, dual-tooth geometry and 2011-2012 Lincoln MKZ 3.5L fitment. Confirm VIN, pr…

    FordPartsGiant

As an Amazon Associate, we earn from qualifying purchases; other part links may also earn au7o a commission. Confirm fitment by VIN before buying.

Typical repair cost:$1,500 - $4,500

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Manually Verified
High Confidence

On the 2011-2012 Lincoln MKZ 2.5L Atkinson Hybrid, ford issued NHTSA recall 15V-340 (Ford reference 15S18) for 2011-2012 Fusion and MKZ to address sudden loss of electric power steering assist. Root cause: intermittent electrical connections in the steering gear motor due to conformal coat contamination and ribbon-cable pin misalignment, leading to loss of motor position signal. Approximately 393,623 vehicles covered.

This issue also affects: Ford C-Max, Ford Escape, Ford Explorer

Common Symptoms

  • power steering warning
  • sudden heavy steering
  • EPAS fault message

How to Fix

Check VIN at NHTSA recall lookup (15V-340). Remedy: dealer inspects the Power Steering Control Module (PSCM) for diagnostic trouble codes — if loss-of-assist DTCs are present, the entire steering gear is replaced free under recall; otherwise, the PSCM software is updated. Some owners also qualify for a Ford Customer Satisfaction Program (15S18) extending coverage on the steering gear.

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Typical repair cost:$0 - $0

Research This Issue

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On the 2007-2012 Lincoln MKZ, first-generation MKZ models (2007-2012, plus the Zephyr) use Takata ammonium-nitrate airbag inflators that can degrade after prolonged exposure to heat and humidity. A degraded inflator can rupture during deployment in a crash, sending metal fragments toward occupants and causing serious injury or death. This is part of the industry-wide Takata recall and was addressed through multiple Ford/Lincoln recall campaigns (e.g., driver-side recall 21S12). Airbags were the single most-complained-about area for the MKZ in NHTSA data.

Common Symptoms

  • Airbag warning light
  • Open recall notice for airbag inflator
  • Risk of inflator rupture / shrapnel on deployment

How to Fix

Ford dealers replace the affected driver-side and/or passenger-side airbag inflator or module free of charge under the recall. Owners should check their VIN at nhtsa.gov/recalls and schedule the free repair; some older units carried do-not-drive warnings until repaired.

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Community Reported
High ConfidenceVerifiedReviewed Jun 2026

On the 2010-2016 Lincoln MKZ, mKZ models with the 6F35 6-speed automatic commonly exhibit harsh or delayed engagement, a bump or slip on takeoff, and sluggish acceleration from 0-5 mph. A known cause is a 6F35 valve body design flaw addressed by a Ford TSB that modifies the valve body separator plate (deleting a hole) and removing a check ball. Owners also report harsh Drive/Reverse engagement on cold starts and overdrive shudder around 40 mph.

Common Symptoms

  • Harsh bump or clunk when shifting into Drive or Reverse
  • Hesitation/sluggishness from a stop then sudden engagement
  • Shudder while accelerating into overdrive around 40 mph
  • Delayed shifts

How to Fix

First verify transmission fluid level/condition, since low fluid mimics the symptoms. The TSB remedy modifies or replaces the valve body separator plate and removes the affected check ball; severe cases need valve body or transmission rebuild. A fluid service can help shudder in milder cases.

What you need to fix it

Only diagnosis- and fitment-reviewed repair parts are linked here.

  • Motorcraft MERCON LV automatic transmission fluid XT-10-QLVC, 1 quart
    OEMXT-10-QLVC

    Drain/fill a confirmed 6F35 MKZ that specifies MERCON LV after level/condition diagnosis Fitment/availability: Live direct AutoZone page identifies Motorcraft XT-10-QLVC MERCON LV, price and Add to Cart. Confirm transmission code W/6F35,…

    AutoZone

As an Amazon Associate, we earn from qualifying purchases; other part links may also earn au7o a commission. Confirm fitment by VIN before buying.

Typical repair cost:$300 - $2,500

Research This Issue

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Community Reported
High ConfidenceVerifiedReviewed Jun 2026
NHTSA Recalls27 recalls

STEERING:ELECTRIC POWER ASSIST SYSTEM

Ford Motor Company (Ford) is recalling certain 2013-2016 Ford Fusion and Lincoln MKZ, 2015-2016 Ford Edge, and 2016 Lincoln MKX vehicles originally sold, or currently registered in Connecticut, Delaware, the District of Columbia, Illinois, Indiana, Iowa, Maine, Maryland, Massachusetts, Michigan, Minnesota, Missouri, New Hampshire, New Jersey, New York, Ohio, Pennsylvania, Rhode Island, Vermont, West Virginia, and Wisconsin. Road salt or other contaminants may corrode the electric power steering gear motor attachment bolts.

Campaign #19V63200029/08/2019

SEAT BELTS:FRONT

Ford Motor Company (Ford) is recalling certain 2015 Fusion and Lincoln MKZ vehicles. In the event of a crash, heat from the deployment of a seat belt pretensioner may cause a front seat belt anchor cable to fail.

Campaign #19V59000012/08/2019

STEERING: STEERING WHEEL/HANDLE BAR

Ford Motor Company (Ford) is recalling certain 2014-2018 Lincoln MKZ and Ford Fusion vehicles. The steering wheel retaining bolt may loosen allowing the steering wheel to detach while driving.

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Other Lincoln Models

Lincoln Aviator31Lincoln Nautilus22Lincoln Navigator18Lincoln MKX10Lincoln Town Car9Lincoln Corsair6

Frequently Asked Questions

What are the most common Lincoln MKZ problems?

According to Au7o's research across NHTSA recalls, manufacturer TSBs, and owner forum reports, the 2011 Lincoln MKZ has 4 documented issues. The most frequently reported are: MKZ 3.5L Duratec V6 Internal Water Pump Leak, MKZ EPS Loss of Assist (NHTSA Recall 15V-340 / Ford 15S18), Takata Airbag Inflator Rupture (Driver and Passenger). Of these, 3 are rated critical and should be addressed promptly.

Is the Lincoln MKZ reliable?

The 2011 Lincoln MKZ has 4 known issues compiled from NHTSA recalls, manufacturer TSBs, and owner forum reports. 3 issues are rated critical: MKZ 3.5L Duratec V6 Internal Water Pump Leak and MKZ EPS Loss of Assist (NHTSA Recall 15V-340 / Ford 15S18) and Takata Airbag Inflator Rupture (Driver and Passenger). Prospective buyers should inspect for these issues and factor potential repair costs into their purchase decision. Regular maintenance following the manufacturer's schedule helps prevent many common problems.

How much does it cost to fix common Lincoln MKZ problems?

Repair costs for known Lincoln MKZ issues range from $0 to $4,500, depending on the specific problem and whether you choose DIY or professional repair. The most critical issue, MKZ 3.5L Duratec V6 Internal Water Pump Leak, typically costs $1,500-$4,500 to repair. Au7o provides step-by-step DIY maintenance guides that can help reduce repair costs.

What is the 2007-2012 Lincoln MKZ MKZ 3.5L Duratec V6 Internal Water Pump Leak?

The 3.5L Duratec V6 in 2007-2012 MKZ (and shared Edge, Taurus, Flex, Explorer) uses a water pump driven internally by the timing chain. When the pump shaft seal fails, coolant leaks into the oil pan rather than externally — owners often see no leak before catastrophic oil contami… Repairs typically run $1,500-$4,500. Severity: high.

What is the 2011-2012 Lincoln MKZ MKZ EPS Loss of Assist (NHTSA Recall 15V-340 / Ford 15S18)?

Ford issued NHTSA recall 15V-340 (Ford reference 15S18) for 2011-2012 Fusion and MKZ to address sudden loss of electric power steering assist. Root cause: intermittent electrical connections in the steering gear motor due to conformal coat contamination and ribbon-cable pin misal… Repairs typically run $0-$0. Severity: high.

Content on this page was compiled with AI assistance using NHTSA complaints, TSBs, owner reports, and public automotive data. While we strive for accuracy, this information may contain errors. Always verify repair procedures and specifications with your vehicle's service manual or a qualified mechanic.

Data compiled from NHTSA recalls, manufacturer TSBs, automotive forums, and AI-assisted research. No aggregated owner-report counts available for this vehicle yet.

Campaign #18V167000
12/03/2018

SEAT BELTS:FRONT

Ford Motor Company (Ford) is recalling certain model year 2013-2016 Ford Fusion vehicles manufactured November 2, 2012, to July 31, 2014, and 2013-2015 Lincoln MKZ vehicles manufactured November 14, 2012, to July 31, 2014. In the event of a crash, heat from the deployment of a seat belt pretensioner may cause a front seat belt anchor cable to fail.

Campaign #16V87500005/12/2016

STEERING:ELECTRIC POWER ASSIST SYSTEM

Ford Motor Company (Ford) is recalling certain model year 2013-2015 Ford Fusion and Lincoln MKZ vehicles manufactured February 3, 2012, to March 20, 2015, and 2015 Ford Edge vehicles manufactured February 26, 2015, to February 28, 2015, and originally sold, or currently registered in, Connecticut, Delaware, Illinois, Indiana, Iowa, Maine, Maryland, Massachusetts, Michigan, Minnesota, Missouri, New Hampshire, New Jersey, New York, Ohio, Pennsylvania, Rhode Island, Vermont, West Virginia, Wisconsin and the District of Columbia. In the affected vehicles, snow or water containing road salt or other contaminants may corrode the electric power steering gear motor attachment bolts.

Campaign #15V25000028/04/2015

+ 22 more recalls. Check all on NHTSA.gov

Enter your VIN at NHTSA.gov to check recalls specific to your vehicle.

What is the 2007-2012 Lincoln MKZ Takata Airbag Inflator Rupture (Driver and Passenger)?

First-generation MKZ models (2007-2012, plus the Zephyr) use Takata ammonium-nitrate airbag inflators that can degrade after prolonged exposure to heat and humidity. A degraded inflator can rupture during deployment in a crash, sending metal fragments toward occupants and causing… Severity: high.

What is the 2010-2016 Lincoln MKZ Harsh / Delayed Automatic Transmission Shifting (6F35)?

MKZ models with the 6F35 6-speed automatic commonly exhibit harsh or delayed engagement, a bump or slip on takeoff, and sluggish acceleration from 0-5 mph. A known cause is a 6F35 valve body design flaw addressed by a Ford TSB that modifies the valve body separator plate (deletin… Repairs typically run $300-$2,500. Severity: medium.