Some 2003-2020 Expedition/Navigator and 2006-2020 F-150 vehicles equipped with TOD transfer cases may exhibit grinding/clicking/ratcheting noise from the front wheel area. This may be due to partial engagement of the integrated wheel ends (IWE). To correct this condition, follow the Service Procedure steps to remove and cap the vacuum supply line.
full bulletin at NHTSA ↗2006 Ford F-150 electrical problems
severe 53 complaints filed with NHTSA · avg repair $850 · see electrical across all vehicles →
Failure mileage
Complaints
53
Recalls
0
Avg fix
$850
1crash
5fires
1injury
When does it fail?
Of the 53 electrical complaints filed for the 2006 Ford F-150, here's the actual mileage breakdown — failures cluster heaviest at 0-25,000 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
Owners have filed 53 electrical complaints with NHTSA against this vehicle, but no formal recall covers the issue — the federal record reflects what manufacturers have admitted, not everything owners are reporting.
No new NHTSA electrical complaint has been filed on this vehicle in over 14 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 electrical 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.
Some 2002-2008 F-Super Duty, F-150 and Mark LT vehicles may exhibit concern during or after programing the VSM. The programming may fail or vehicle symptoms such as inoperative door locks, dome lamps, door ajar indicators or auto lamps may occur after successful programing. To ensure the VSM is configured correctly, use the Integrated Diagnostic System (IDS) scan tool and select the blue ball and socket icon in the upper left corner. Select the utility knife in the bottom left corner. Select Update/Special Function and enter 53061 in the blue box then press the tick mark. The screen will go back to the system utilities page. Navigate to the toolbox tab and run the Programmable Module Insta
full bulletin at NHTSA ↗When ordering a 2005 to 2008 remanufactured 5.4L 3v or 6.8L 3v engine, spark plug boots may be provided in the packaging. Replace all black spark plug boots from the original engine with the 'brown' spark plug boots, as provided. The updated 'brown' spark plug boots are longer than the black boots to accommodate a running change in the spark plug length. The ignition coil bodies and spring/resistor are transferable and only the rubber boots require replacement. Failure to install the spark plug boots provided with the replacement engine could lead to drivability concerns.
full bulletin at NHTSA ↗FORD/LINCOLN/MERCURY: MAY HAVE SLUDGE BUILDUP IN THROTTLE BODY LEADING TO LESS AIRFLOW OR ENGINE IDLING RPM FLUCTUATION AND HARD STARTS OR BATTERY DISCONNECT OR DEAD BATTERY AFTER KEEP ALIVE MEMORY (KAM) CLEAR. MODELS 2003-05 THUNDERBIRD, 05-06 MUSTANG, 06-08 FUSION, 04-05 EXPLORER, 05-06 EXPEDITION, 05-07 F-150; 2003-06 LS, 06 ZEPHYR, 05-06 NAVIGATOR; 06-08 MILAN.
full bulletin at NHTSA ↗FORD: THERE MAY BE CHAFFING ON A WIRE HARNESS BETWEEN THE CLOCKSPRING AND DRIVER AIRBAG WHICH CAUSE THE AIRBAG WARNING LIGHT TO COME ON.
full bulletin at NHTSA ↗Source: NHTSA manufacturer communications. Bring the bulletin number to your dealer or shop.
The failure pattern owners describe
Owners of 2006 F-150s describe a constellation of electrical faults, many documented across multiple vehicles without factory recalls. The most widespread complaint is instrument cluster malfunction—gauges, speedometer, and odometer drop out intermittently or fail completely, sometimes temperature-triggered. Brake warning lights stay on continuously even with functioning brakes, masking real brake failures. Owners also report the brake light fault has affected hundreds of 2006–2010 F-150s and is tracked on multiple forums.
Factory spark plugs eject from cylinder heads on Triton V8 engines, sometimes at highway speed, requiring cylinder head removal and resleeve ($543+). One mechanic told an owner he was the tenth customer that week with this failure; Ford dealers acknowledged the issue but had no recall in place.
Interior and exterior lighting—dome lights, door ajar lights, power windows—fail without pattern. Power window regulators break within 11 months to a few years; one owner replaced the same regulator three times under warranty. Engine stalls mid-acceleration or at stops, and fires have occurred both immediately post-service and at highway speed, sometimes with undetermined cause.
Less common but critical: pretensioner seat belt failures despite no accident history; ABS sensor short-circuits fusing to wire harnesses; door wire harnesses fracture with bare wires exposed; fuel pump drive modules rust due to poor bracket mounting design. Owners note that many failures occur within the first 10,000–50,000 miles despite the truck being new at purchase.
Same Ford F-150 electrical reports on nearby years: 2005 · 2007 · 2008 · 2009
Failure modes owners describe
Spark Plugs Ejecting from Cylinder Head (Triton V8)
Factory spark plugs fracture or blow out of the cylinder head during normal operation, sometimes requiring cylinder head removal and resleeve. Owners report this is a widespread issue that Ford dealers have acknowledged but not recalled.
When: 84,000 miles and under; reports from 2006 onwards through 2015
Symptoms owners cite: Loud popping or banging noise under hood; Spark plug visible in cylinder head; Multiple spark plugs fractured; Engine misfiring
Repairs/costs cited: $543 for cylinder head resleeve, spark plug wire, and all eight plugs; some owners note lawsuits filed against Ford for defective spark plugs with partial reimbursement
Recalls/TSBs owners mention: Ford dealers acknowledged the problem but stated no recall on file; one lawsuit mentioned partial reimbursement
Instrument Cluster Electrical Failure
Instrument cluster fails intermittently or completely, causing gauges, speedometer, odometer, and warning lights to malfunction. Defect prevents drivers from knowing vehicle speed and may mask brake system faults. Owners report widespread occurrence across model years without factory recall.
When: 23,000 to 150,000 miles; failures documented from early ownership through later years
Symptoms owners cite: Speedometer and gauges go dead then return; Odometer display blinks or stops working; Dashboard lights flicker on and off while driving; Instrument panel becomes completely inoperable; Temperature-dependent failure (shuts off above 70 degrees); Cluster resets only after time (15 minutes or more)
Codes mentioned: Recall 06C11
Repairs/costs cited: Cluster replacement cost $400–$700 plus labor ($1,000+ total); parts often unavailable nationwide; one owner reports manufacturer Electra-Sound had no ETA on manufacturing replacement clusters
Recalls/TSBs owners mention: Recall 06C11 issued for instrument cluster calibration; some owners report recall repair did not resolve issues; parts shortages noted
Brake Light Always On (Cluster Short Circuit)
Brake warning light remains illuminated continuously even though brakes are functioning normally. This masking effect creates a hazard: if actual brake failure occurs, the driver cannot distinguish a real problem from the persistent false light.
When: Starting around 76,000 miles (reported 2010); vehicles 2004–2010 model years affected
Symptoms owners cite: Brake warning light stays on at all times; No actual brake system malfunction
Repairs/costs cited: $400–$600 for cluster repair; labor can bring total above $1,000
Recalls/TSBs owners mention: No recall issued despite widespread owner reports; problem documented across multiple websites and states
Pretensioner (Seat Belt Restraint) Failure
Seat belt pretensioner fails to function properly, rendering the safety restraint system non-functional in a crash. Owner reports this failure occurred without accident or abuse.
When: Early ownership
Symptoms owners cite: Airbag light illuminates; Pretensioner malfunctions or fails to engage
Repairs/costs cited: $392.21 repair estimate; owner paid for replacement out of pocket after Ford denied reimbursement request
Recalls/TSBs owners mention: Ford denied reimbursement; recalls issued for 2013–2014 models for same defect, but 2006 owner not covered
Interior and Exterior Electrical Lighting Failures
Multiple lighting and electrical circuit failures, including interior dome lights, door jar lights, and exterior lighting malfunction independently or together. Owners report widespread problem across Ford models without recall.
When: Various; some reported early in ownership
Symptoms owners cite: Front map lights turn on by themselves with engine off; Door ajar light stays on even when doors are closed; Interior lights do not illuminate when door opens; Dashboard lights blink and reset erratically on startup
Recalls/TSBs owners mention: No recall issued despite owners reporting the problem is widespread across Ford lineup
Power Window Regulator Failure
Power window regulators break, leaving windows stuck in down position. One owner replaced the same regulator three times within warranty period; another owner's regulator failed after 11 months, leaving window inoperable in the up direction.
When: 11 months to multiple failures within warranty period
Symptoms owners cite: Window switch operates in one direction (down) but not the other (up); Window becomes stuck in down position
Repairs/costs cited: $400 per replacement; multiple failures on same vehicle within short timeframe
Recalls/TSBs owners mention: Some replacements covered under warranty; owners believe part should be recalled
Engine Stall and Loss of Power Events
Engine stalls without warning or loses power during acceleration. One case occurred at highway speed while passing; another during brake application at traffic light. In one instance the vehicle accelerated instead of braking, nearly causing a crash.
When: Various mileages; some early in vehicle life
Symptoms owners cite: Engine stalls without warning; Loss of throttle response during acceleration; Check engine light illuminates; Engine shuts off after 30 seconds of unresponsiveness; Unintended acceleration (one report)
Codes mentioned: Check engine light
Repairs/costs cited: One owner reported replacing fuel injector after stall; problem persisted. Restart required to reset computer
Engine Fire (Multiple Causes)
Vehicle caught fire while operating or after recent maintenance. One fire caused by missing heat shield over catalytic converter allowing floorboard sound barrier material to hang on converter; another fire occurred at highway speed with undetermined cause; a third erupted after fuel injector replacement and test drive.
When: Early mileage (36,000 miles); one within days of purchase
Symptoms owners cite: Smoke from engine compartment; Flames visible under hood or underneath vehicle; Fire department intervention required
Repairs/costs cited: Vehicles total loss or near total loss; extensive damage prevented root cause determination in some cases
Fuel Pump Drive Module Corrosion
Fuel pump drive module rusts due to poor mounting design that allows salt and moisture to collect between module and axle bracket. This corrosion exposes electrical circuits and causes power loss and rough running.
When: Not specified; corrected with spacers during repair
Symptoms owners cite: Vehicle loses power; Unable to run correctly; Module visibly rusted with large hole in back
Repairs/costs cited: New module installed with spacers to prevent future moisture collection
ABS System Electrical Failures
ABS sensor shorts out and fuses to wire harness, causing electrical damage throughout the vehicle. In one case, wire harness burned, sending energy to unintended components; another case involved a backup sensor sounding false alarms.
When: Various; one in cold temperature conditions
Symptoms owners cite: ABS sensor failure; Wire harness damage and burn marks; Backup sensor alarm sounds without obstruction; Multiple electrical system failures downstream of short
Repairs/costs cited: $2,300 repair in one case; dealer could not confirm if problem originated in ABS or harness
Recalls/TSBs owners mention: Ford claims no recall; similar complaint noted (complaint #10195595)
Smart Junction Box Failure
Smart junction box fails, causing multiple electrical systems to stop functioning and fuses to blow repeatedly. Interior, dash, and rear lights stop working; horn inoperative; blown fuses produce smoke when replaced.
When: Not specified
Symptoms owners cite: Interior and dash lights do not illuminate; Rear lights fail; Horn does not work; Fuses blow repeatedly; Smoke when fuses are replaced
Repairs/costs cited: Smart junction box replacement required
Ignition Switch Failure
Ignition switch fails, causing the engine to stall at speed. Vehicle fails to restart and requires tow. After repair, ticking noise persists.
When: Unknown mileage
Symptoms owners cite: Vehicle stalls without warning at 45 mph; Fails to restart; Ticking noise after repair
Repairs/costs cited: Ignition switch replacement
Door Wire Harness Damage
Wire harness that runs to the door breaks internally, leaving multiple wires fractured with bare wire exposed. This creates a fire hazard and causes loss of electrical functions to door components.
When: Not specified
Symptoms owners cite: Power windows stop working; Door locks stop working; Mirror adjustments stop working; Visible broken or breaking wires in harness
Repairs/costs cited: Wire harness inspection shows multiple breaks with bare wires exposed
Engine Coil and Misfire Issues
Coil packs fail repeatedly and catalytic converter must be replaced multiple times. One owner replaced all eight coils (three replaced twice) and both catalytic converters within 24 months, with continuous misfire and strong fuel smell.
When: Within 24 months of complaint
Symptoms owners cite: Engine misfire codes; Strong fuel odor from exhaust; Check engine light
Repairs/costs cited: Eight coil replacements (three replaced twice) and two catalytic converter replacements within 24 months
Recalls/TSBs owners mention: Dealer unable to identify root cause despite multiple repairs
Camshaft Position Sensor Failure
Camshaft position sensor throws intermittent circuit fault code, causing engine to run on half power, poor fuel economy, and hesitation in transmission shifting.
When: Not specified
Symptoms owners cite: Check engine light with intermittent cam shaft position code; Vehicle runs on half power; Poor fuel economy; Transmission hesitation
Codes mentioned: Camshaft position sensor circuit A, bank 1 (intermittent)
Odometer Display Malfunction
Odometer display in instrument cluster malfunctions, either blinking, flashing, or ceasing to work entirely. This prevents drivers from accurately knowing vehicle mileage, which is critical for maintenance scheduling and detecting odometer fraud.
When: 62,000 miles and higher
Symptoms owners cite: Odometer display blinks or flashes; Odometer stops working completely; LED display becomes inoperable; Mileage indicator shows test screen instead of mileage
Repairs/costs cited: $500–$700 for cluster replacement
Recalls/TSBs owners mention: No recall issued despite widespread reports
Synthesized from 53 NHTSA owner complaints — unverified consumer allegations, summarized for patterns. The verbatim filings appear below.
What owners are reporting 5 most recent
Tl* the contact owns a 2006 Ford f150. The contact was driving approximately 35 MPH and noticed the instrument panel LED light failed to illuminate. The vehicle was taken to an authorized dealer who advised the contact that the instrument panel cluster would need to be replaced. The vehicle had not been repaired. The manufacturer was notified of the malfunction. The approximate failure mileage…
2006 f150 4x4 lariat, 7557 miles. In cold temperature backup sensor sounds alarm as if obstruction is close when there is none. Took to local dealer and sales said this is normal for this model. Am waiting for service to schedule appointment as truck only has a few months left of warranty. Truck is only driven in winter and this is first time in 3 years this has happened. *tr
Computer keeps throwing code for intermittent cam shaft position sensor circuit a bank 1. Cause truck to run on only half power. Poor MPG. No horsepower. Hesitation in shifting.
Motor is missing and the codes are p0345, p0349 and p0171
Under normal operation the gas pedal stops responding,the check engine light comes on and after about 30 seconds the engine shuts off. I have to stop , put the truck in park , turn off the key and restart the truck. This resets the computer and the truck seems fine for a while till it happens again. This has happened several times mostly on back roads. Today it happened while I was entering a…
Had electrical trouble with your 2006 Ford F-150?
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 electrical problem on the 2006 Ford F-150?
It's a meaningful issue. 53 complaints have been filed and the failure mode causes operational problems for owners. Repairs average $850.
At what mileage does the electrical typically fail?
Across the 45 complaints that reported odometer mileage, most electrical failures cluster between 36,000 and 114,000 miles, with the median around 71,000. A quarter of owners report trouble before 36,000; a quarter make it past 114,000. 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 $850 for electrical 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 electrical?
No active recalls currently cover electrical 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/2006/Ford/F-150.
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.