2010 Lincoln Town Car Info Systems & Data Sheets

The 2010 Lincoln Town Car runs the same 4.6L SOHC 2-valve "Romeo" V8 that carried the Panther platform from 2003 through its final year in 2011 — 239 hp at 4,900 rpm, 287 lb-ft of torque at 4,100 rpm, mated to a 4R75W 4-speed automatic. The engine is flex-fuel capable on 2010 units, meaning the PCM supports E85 operation in addition to regular gasoline. By 2010, the Town Car had been in its current generation for over seven years with minimal powertrain changes — the architecture was mature and well-sorted, which is why these cars ended up in livery, taxi, and limo fleets running well past 300,000 miles on original driveline components. The 2010 model came in two civilian trims — Signature Limited and Signature L (the long-wheelbase variant, 6 inches longer in both overall length and wheelbase) — plus two dedicated livery/commercial variants. The electrical architecture on the Town Car shares the Panther BJB and PCM physical layout with the Crown Victoria and Grand Marquis, but diverges in a few key areas: the BJB uses Micro Relays at positions 201–209 and Mini Relays at 301–304 (the Crown Vic and Grand Marquis use 1/2 ISO and Full ISO respectively), and the CJB circuit assignments reflect the Town Car's luxury-specific features — keypad entry module, driver seat module, decklid pulldown, adjustable pedal switch, electrochromic mirror, and rear cigar lighters — none of which appear in Crown Vic fuse diagrams. C175T pin 21 is also specific to this model: where the Crown Victoria and Grand Marquis carry an engine vacuum signal at that position, the Town Car carries an anti-theft indicator control circuit. These differences matter when you're cross-referencing fuse diagrams or swapping PCMs across models — the pinout is not identical.

Download Your Schematics:

1. 2010 Lincoln Town Car Battery Junction Fuse Box Schematic Data Sheet
2. 2010 Lincoln Town Car Powertrain Control Module Schematic Data Sheet
3. 2010 Lincoln Town Car Central Junction Box Schematic Data Sheet

Resources:

1. Ford OBD-2 Diagnostic Trouble Codes List
2. 2003–2011 Panther Platform Resources & Manuals List
3. Label Installation Guide

Labels:

1. Schematic Data Labels

In this post:

1. Engine Specifications
2. Transmission Specifications
3. Battery Junction Box Fuse Panel Data & Info
4. Powertrain Control Module Data & Info
5. Central Junction Fuse Box Data & Info
6. Trim Level Fuse Differences
7. Known Issues & TSB Reference
8. Scheduled Maintenance Intervals

Engine Specifications

The 2010 Town Car uses Ford's 4.6L 2-valve SOHC "Romeo" V8 — same block as every other Panther from 2003 forward. The Town Car's output figures are meaningfully higher than the Crown Victoria's civilian spec: 239 hp and 287 lb-ft versus the Crown Vic's 224 hp and 272 lb-ft, the difference coming from a revised intake manifold, different camshaft timing, and exhaust tuning specific to the Town Car application. The 2010 is also flex-fuel capable — the PCM calibration supports both regular gasoline and E85 ethanol blends, and the fuel system components are compatible with either. The "Romeo" designation refers to the Romeo, Michigan casting facility and distinguishes this block from the Windsor-cast 4.6 used in Mustang GTs and F-150s. The two share displacement but differ in enough casting and head geometry details that they are not drop-in interchangeable.

Transmission Specifications

The 2010 Town Car uses the 4R75W 4-speed automatic — the same unit that replaced the 4R70W across the Panther platform starting in 2005. The 4R75W added a 24-lug ring gear for the output shaft speed sensor, a turbine shaft speed (TSS) sensor that gives the PCM real-time torque converter slip data, a revised front pump, and a stronger torque converter. The gear ratios are identical to the 4R70W. Fluid spec is Mercon V — do not use standard Mercon or Dexron. Given the Town Car's heavy use in livery, taxi, and limo applications, pay close attention to fluid condition and change intervals: a Town Car that spent years in fleet service needs its transmission fluid evaluated based on actual duty cycle, not the mileage on the odometer alone. The 2010 units are also subject to the transmission cooler tube leak TSB (10-23-7) — a common failure point is the driver's side cooler tube where it connects to the radiator cooler core. If you see ATF weeping from that area, the cooler core is the likely source.

Battery Junction Box Fuse Panel Data & Info

Location: Engine bay, passenger side, behind battery | All information verified with AllData.

The Battery Junction Box (BJB) on the 2010 Town Car is the under-hood high-current distribution center — the first hard protection point between the battery/alternator output and the rest of the vehicle. It carries the primary heavy-load feeds: starter relay, cooling fan (50A), ABS pump (40A), blower relay, rear defroster relay, PCM power relay, and the two main I/P fuse box feeds (positions 103 and 104) that energize the majority of the CJB circuits inside the cabin. The relay layout on the Town Car BJB differs from the Crown Victoria and Grand Marquis: positions 201–209 use Micro Relays rather than 1/2 ISO relays, and positions 301–304 use Mini Relays rather than Full ISO. That distinction is real and affects parts sourcing — a Mini Relay and a Full ISO relay are not the same form factor. Position 108 on the 2010 unit protects the Power Decklid Module (PDM), which controls the Town Car's power trunk release — a feature unique to this model versus the Crown Vic. Positions 111 and 113 handle rear power points, and 112 feeds the rear air suspension compressor via its own relay. If you've got a 2010 Town Car with air suspension complaints and the ride height won't adjust, check the RASM fuse (position 13, 10A) and relay 302 before pulling the compressor or module.

The same moisture/corrosion failure pattern that kills Crown Vic BJBs applies here — the Town Car's engine bay layout exposes the BJB to the same cowl water paths and wash exposure. Corroded fuse legs and bus contacts build resistance, resistance generates heat, and heat causes intermittent no-crank, random maxi fuse failures, charging issues, or multiple unrelated systems failing simultaneously. The two-step fix always applies: eliminate the water intrusion source and seal the box properly, then pull and physically inspect every fuse, relay, and bus contact for corrosion or heat damage. White or green oxidation on fuse legs, discolored or melted plastic at terminal contacts, and arc burn on bus bars are all signs that cleaning alone won't fix it. Repair or replace affected terminals, then verify with a voltage-drop test across the main BJB feeds under load — more than 0.1–0.2V drop across any feed or ground connection means the resistance is still there.

Powertrain Control Module (PCM/ECU) Data & Info

Location: Engine bay, driver's side inner fender | All information verified with AllData.

The 2010 Town Car PCM sits on the driver's side inner fender in the same bracket mount used across all Panther-platform PCMs. The three-connector, 150-pin harness — C175T (left), C175B (center), C175E (right) — manages everything: engine fueling, ignition, throttle control, transmission shift strategy, O2 sensor monitoring, CAN bus communication to other modules, and charging system feedback. The 2010 PCM is a drive-by-wire unit — the same Electronic Throttle Control (ETC) architecture introduced across the platform in 2005. Three Accelerator Pedal Position (APP) sensors at C175B provide redundant pedal position inputs, and the throttle body carries two Throttle Position Sensors (TPS) that confirm actual plate angle. If any two of those five signals disagree beyond calibrated tolerance, the PCM sets an ETC fault and illuminates the wrench light. C175T pin 32 carries the anti-theft indicator control on the Town Car — this differs from the Crown Victoria and Grand Marquis, where that position carries a different signal. C175B pin 8 is also model-specific: on the 2010 Town Car this pin carries a traction control switch on/off signal, while on Crown Victoria and Grand Marquis that pin carries the brake pedal position switch. Do not swap PCMs between models without verifying full pin-for-pin compatibility; the mapping is close but not identical.

C175T handles transmission signals (shift solenoids A and B at pins 42–43, TCC solenoid at pin 46, TSS at pin 15, OSS at pin 3, and all four Digital Transmission Range sensor lines), O2 sensor inputs from the rear (downstream) sensors at pins 24–25, EPC solenoid at pin 11, and the ground-referenced signal return at pin 41. C175B handles all ETC system signals (APP 1 at pin 5, APP 2 at pin 17, APP 3 at pin 28, and their reference voltages at pins 4 and 24), plus CAN bus+ at pin 11 and CAN bus− at pin 23, fuel pump driver module control at pin 12, starter relay control at pin 2, and the four-wire ground cluster at pins 47–50. Those grounds are all BK/WH on circuit 570 at 18 gauge — if you're chasing intermittent PCM communication faults, start here and voltage-drop test each pin to chassis ground under load before touching anything else. C175E handles all eight fuel injector controls, all eight coil-on-plug (COP) controls, the ETC motor drive wires at pins 34 and 51, MAF sensor signal at pin 25, O2 heaters for the front (upstream) sensors at pins 69–70, and crankshaft/camshaft position sensors at pins 45–47.

On a Town Car with heavy livery or fleet mileage, the most common PCM-adjacent issues are: (1) ground degradation at C175B pins 47–50 — corrosion or loose terminal contact here causes intermittent module communication errors, erratic shifting, and misfire codes that chase their own tail; (2) injector temperature sensor signal at C175E pin 19 going open or erratic, which can affect fuel pulse width calculations and cause lean conditions that won't trace obviously to a fuel delivery complaint; and (3) ETC faults from a carbon-bound throttle plate — before condemning the throttle body or PCM for ETC codes, clean the bore and plate with throttle body cleaner and verify TPS1 and TPS2 are tracking correctly (C175E pins 61 and 60 respectively). If a PCM replacement is needed, the 2010 Town Car requires VIN programming and PCM configuration after installation.

C175T (BK) | LEFT (12B637)

C175B (BK) | CENTER (14290)

C175E (BK) | RIGHT (12B637)

Central Junction Fuse Box Data & Info

Location: Driver's side compartment, under steering wheel | All information verified with AllData.

The Central Junction Box (CJB) on the 2010 Town Car is the interior distribution panel under the dash — the cabin-side counterpart to the under-hood BJB. It pulls its two main feeds from BJB positions 103 and 104, so a failed or intermittent maxi fuse at either of those positions can wipe out large blocks of the CJB without any single fuse inside the cabin blowing. The Town Car CJB carries several circuits not found in the Crown Victoria: keypad entry module feed (position 19), decklid release and Power Decklid Module (position 8), adjustable pedal switch (position 14), Driver Seat Module (position 19), electrochromic mirror (position 9), and rear cigar lighters at the BJB level (position 115). Positions 3, 12, and 21 reflect the Town Car's audio and navigation setup — for 2007 units this includes navigation control head feeds; for 2008–2011 it consolidates to audio only. The multi-function switch hazard and turn signal circuits at positions 10 and 11 run 15A each, same as the Crown Vic. Ford's factory wiring diagrams use F2.xx prefix for CJB fuses and F1.xx for BJB — keeping that separation straight is important when following diagnostic flow charts, because the symptom path often assumes you're starting in the right box.

Moisture intrusion is the dominant real-world CJB failure on these cars, and the source is almost always the cowl area. Water migrates along the firewall, drips onto the driver's footwell area, soaks the harness, and eventually reaches the CJB connectors. Once moisture gets into the terminal contacts, corrosion builds resistance, heat follows, and you end up with intermittent failures that don't trace cleanly — a fuse that keeps blowing with no obvious load fault, wipers or lighting doing random things, no-start conditions when moisture bridges the PATS transceiver circuit (position 6), or multiple unrelated circuits acting up at the same time. The two-step fix: find and eliminate the water source at the cowl, drain channels, windshield seal, or firewall grommets first, then pull and inspect the CJB connectors for corroded or heat-damaged pins. Green or black oxidation on terminal faces and melted connector housing both mean the terminal needs to come out and be replaced — not cleaned and reinstalled. Corrosion-contaminated contacts re-corrode faster than clean ones.

Trim Level Fuse Differences

The 2010 Town Car came in two retail trim configurations — Signature Limited (standard wheelbase) and Signature L (long wheelbase, 6 inches longer overall) — plus two commercial livery/fleet variants. The fuse box layouts are shared across all trims, but a handful of positions reflect optional equipment that differs by configuration. The most relevant to note for diagnostics is the delay accessory relay circuit (CJB position 32 and BJB position 602), which on 2007 units also covered moonroof and navigation; on 2008–2011 units it covers audio only. The Signature L's longer wheelbase adds rear-seat features fed through the rear power point and cigar lighter circuits at BJB positions 111, 113, and 115. The heated rear seat feed (BJB position 2) is active only on equipped vehicles — if yours doesn't have them and that fuse is populated, verify it's not a swapped harness from a different trim.

Known Issues & TSB Reference

The items below are documented issues Ford and Lincoln acknowledged for the 2010 Town Car — through Technical Service Bulletins (TSBs), safety recalls, or extended service campaigns. This isn't a complete TSB list, but it covers the issues most likely to affect a 2010 Town Car in current service. Full TSB text is available through ALLDATA, Mitchell1, or your dealer's service department. Pay particular attention to the steering shaft recall — it's a safety issue that Ford covered at no charge, and a significant portion of the affected fleet still hasn't been inspected.

Scheduled Maintenance Intervals

The intervals below reflect Ford's Normal Schedule as published for 2007–2011 Town Car. Normal schedule applies to typical everyday driving. If the vehicle has seen livery, taxi, limo, or any extended-idle fleet duty, the Special Operating Conditions schedule applies and most fluid intervals drop significantly — oil to every 3,000 miles or 3 months, ATF to every 30,000 miles. Given the Town Car's widespread use in commercial fleet applications, a significant portion of 2010 units on the secondary market have duty cycles that warrant the heavy-use schedule regardless of what the odometer says. When in doubt about a used Town Car's history, default to the shorter intervals until you've established baseline fluid condition.