DELAYED OR HARSH REVERSE ENGAGEMENTS - 5R55S TRANSMISSION - VEHICLES BUILT PRIOR TO 09/23/2004.
full bulletin at NHTSA ↗2005 Lincoln Aviator powertrain problems
severe 11 complaints filed with NHTSA · avg repair $2,500 · see powertrain across all vehicles →
Failure mileage
Complaints
11
Recalls
0
Avg fix
$2,500
1crash
When does it fail?
Of the 11 powertrain complaints filed for the 2005 Lincoln Aviator, here's the actual mileage breakdown — failures cluster heaviest at 75,000-100,000 mi.
0-25k
25-50k
50-75k
75-100k
100-125k
125-150k
150k+
Each bar shows the share of total complaints filed at that mileage range. Peak failure window highlighted. Some owners report problems earlier; some make it well past 150,000 miles symptom-free. Maintenance habits and driving conditions shift the curve as much as mileage alone.
What stands out
Powertrain accounts for 22% of all owner complaints filed against this vehicle, across 4 categories tracked.
No new NHTSA powertrain complaint has been filed on this vehicle in over 15 years — the issue may be aging out of the active population.
Is there a fix? Manufacturer service bulletins
The manufacturer has issued service bulletins covering powertrain on this vehicle — documented repair instructions, service campaigns, or warranty extensions sent to dealers. A TSB isn't a recall (it's not a free safety remedy), but it's the manufacturer acknowledging the issue and how to fix it.
Source: NHTSA manufacturer communications. Bring the bulletin number to your dealer or shop.
The failure pattern owners describe
The shift selector is the dominant complaint across these narratives. Multiple owners report the gear shift getting stuck in park, drive, or reverse—trapping the vehicle and key in the ignition. Two owners describe the shift knob or internal unlock lever breaking off entirely during normal use. One critical incident involved a vehicle rolling backward down a driveway in light snow after the shift selector dislodged, hitting a parked vehicle; that owner reported the dealer replaced the selector four times under warranty as the defect recurred. Repair costs run $950 to $1100 per replacement. Ford/Lincoln issued no recalls and declined liability in documented cases.
Beyond the shifter, owners report transmission slip and hesitation once daily driving began, plus an overdrive sensor code. On the rear axle and suspension side, complaints include both rear wheel bearings failing simultaneously (creating "death wobble"), a whining noise from the rear end, one instance of the left rear axle coming loose while driving, and a rear panel that broke twice. These are serious durability failures for a vehicle this age.
Failure modes owners describe
Gear shift selector stuck in park or other gear
Gear shift selector becomes mechanically stuck and cannot be moved out of park, drive, or reverse position. The shift lever may lock up, requiring replacement of the entire shift selector assembly.
When: 56,000 to 78,000 miles; occurs during normal parking and driving use
Symptoms owners cite: Unable to move gear shift out of park; Unable to move gear shift out of drive; Unable to move gear shift out of reverse; Key remains lodged in ignition column when shift is stuck
Repairs/costs cited: $950 to $1100 for gear shift selector replacement at independent shops; multiple replacements required in some cases (up to 4 times within a year)
Recalls/TSBs owners mention: Manufacturer investigated one case, replaced shift selector under warranty once, but offered no liability and issued no recalls
Gear shift selector dislodges or detaches from housing
Gear shift knob or internal unlock lever breaks off or detaches from the shift assembly, making the shift inoperable. The gear shift can be bumped out of park without the key in ignition, creating a rollaway hazard.
When: 72,000 to 78,000 miles; one documented vehicle rollaway on small incline with light snow present
Symptoms owners cite: Gear shift knob breaks off; Internal plastic unlock lever breaks off from metal housing; Gear shift detaches while attempting to shift; Shift can move out of park if bumped without key in ignition; Vehicle rolled away in reverse while parked on incline, striking another vehicle
Repairs/costs cited: Gear shift selector replacement required; parts and labor costs $950–$1100 at independent shops
Recalls/TSBs owners mention: No recalls issued; manufacturer took no liability; repairs at owner's expense
Transmission slip and hesitation
Transmission begins to slip and hesitate between gears during daily driving. Overdrive sensor illuminates. Vehicle pulls back and forth unpredictably. Failure progressed from occasional to frequent.
When: Began after transitioning from weekend-only use to daily driving; specific mileage not stated
Symptoms owners cite: Transmission slipping; Transmission hesitation between gears; Vehicle pulls forward and backward unpredictably; Overdrive sensor light illuminated; Concern shift selector may disengage
Codes mentioned: O/D sensor code
Repairs/costs cited: Not repaired; owner concerned about cost and dealer unwillingness to address
Rear wheel bearing failure
Both rear wheel bearings fail under normal driving conditions, creating severe vibration and directional instability resembling impaired driving. Wheel bearing failure creates risk of wheel separation.
When: Specific mileage not stated
Symptoms owners cite: Both rear wheel bearings failed simultaneously; Death wobble in rear end; Severe vibration; Vehicle handling resembles impaired driving; Risk of wheel separation during driving
Repairs/costs cited: Not specified
Rear axle whining noise
Rear axle produces whining or siren-like sound during acceleration, deceleration, and cruising. Indicates potential bearing or gear wear in rear axle assembly.
When: Specific mileage not stated
Symptoms owners cite: Whining sound from rear end; Siren-like noise from rear axle; Noise present at acceleration, deceleration, and cruise speeds
Rear axle structural failure
Left side rear axle begins separating from vehicle during normal driving, creating loss of structural integrity and potential complete axle separation.
When: Specific mileage not stated
Symptoms owners cite: Left side rear axle coming out of vehicle while moving
Rear panel structural failure
Rear panel breaks repeatedly, requiring multiple repairs. Indicates poor material durability or attachment method.
When: Occurred at least twice during vehicle ownership; specific mileage not stated
Symptoms owners cite: Rear panel breaks; Rear panel breaks a second time after repair
Synthesized from 11 NHTSA owner complaints — unverified consumer allegations, summarized for patterns. The verbatim filings appear below.
What owners are reporting 5 most recent
Both back wheel bearings fail. Under normal driving conditions. Almost lost back wheel while driving. Car develops death wobble and looks like your drunk driving. *tr
Shift lever became stuck in drive in our garage. We were not able to move the shifter out of drive to park or any other gear. We were able to turn the car engine off but the key remained lodged in the column. This occurred on a 2005 aviator as was discussed in another report in the database. The dealer has quoted a $950 repair charge. No coverage by Ford/Lincoln. *tr
Tl* the contact owns a 2005 Lincoln aviator. The contact stated that the vehicle would not shift out of park and while attempting to shift it out of park, the gear shift detached from the vehicle. An authorized dealer stated that the gear shifter would need to be replaced. The manufacturer was notified, but offered no assistance. The vehicle was not repaired. The failure and current mleages were…
Owner of 2005 Lincoln aviator. I was not able to get the gear shift out of park. I had the aviator towed to a family member's automotive garage and was told that I will need to have the entire gear shift replaced. Upon doing some research, it seems that this is a very common problem in this year, make, and model. I have read endless testimonies from other vehicle owners with the exact…
My aviator is making a whinning/siren sound in the rear end at accelerating, decelerating and cruising speeds. *nm
Had powertrain trouble with your 2005 Lincoln Aviator?
File a complaint with NHTSA → It's free, official, and how every report above got here — owner filings are the federal safety record this page is built on.
Common questions
How serious is the powertrain problem on the 2005 Lincoln Aviator?
It's a meaningful issue. 11 complaints have been filed and the failure mode causes operational problems for owners. Repairs average $2,500.
At what mileage does the powertrain typically fail?
Across the 9 complaints that reported odometer mileage, most powertrain failures cluster between 72,000 and 85,000 miles, with the median around 78,000. A quarter of owners report trouble before 72,000; a quarter make it past 85,000. Maintenance history matters more than the odometer alone — this is the reported failure window, not a guarantee.
What does it cost to fix?
Independent shops typically charge around $2,500 for powertrain repairs on this vehicle. Dealer pricing tends to run 20-40% higher. The exact figure depends on the specific failure mode, parts availability, and your local labor rates. If you're outside factory warranty, an extended service contract often covers this category.
Are there any recalls related to powertrain?
No active recalls currently cover powertrain issues on this vehicle. The complaints filed represent owner-reported failures that haven't risen to the level of a manufacturer-issued recall — but they're still worth knowing about before you buy or budget for repairs.
Related
Complaint and recall data sourced from the National Highway Traffic Safety Administration (NHTSA)
public records database. Verify the raw federal record at
nhtsa.gov/vehicle/2005/Lincoln/Aviator.
Severity ratings are derived from reported crashes, fires, injuries, and fatalities. Repair cost estimates are
independent-shop national averages and may differ in your area. Some links on this page are affiliate links.