Jeep›Liberty›2006›3.7L/jeep/liberty/2006/3-7l/

KJ platform

2006 Jeep Liberty — 3.7L

Factory specifications, fluid capacities, torque values, EPA fuel economy and the federal safety record for the 2006 Liberty 3.7L.

Body SUVEngine 3.7LTransmission Automatic 4-spd

The 2006 Jeep Liberty 3.7L is an SUV built on the KJ platform that employs a 3.7‑liter V6 engine paired with an automatic 4‑speed transmission. It achieves EPA fuel‑economy ratings of 15 city, 21 highway and 17 combined mpg and requires a 5‑quart oil change with 5W‑30 API oil. In the broader Liberty timeline, complaint volume peaked at 1,807 in 2002 and fell to just six in 2000, while the 2006 model recorded 1,368 total owner complaints and ten recalls, most often tied to visibility issues.

Model year2012 2011 2010 2009 2008 2007 2006 2005 2004

Quick specs

Fluid capacities, tune-up values and fuel economy at a glance.

Engine oil capacity5 qt w/ filterOEM · verified

Engine oil type5W-30 APIOEM · verified

Lug nut torque95 ft-lbsOEM · verified

EPA fuel economy15/21/17 mpgEPA · verified

Fitment & sizes

Replacement part sizes and factory part numbers — battery, bulbs, filters and belts.

From the factory this vehicle uses a BCI 34 · 600 CCA battery, OE oil filter 04781452BF. Note the factory fuel filter is now discontinued — plan on a superseded or quality aftermarket equivalent, which the part pages below list where known. Each part links to every other vehicle that shares it, so a part you already stock may fit more of your fleet than you'd expect.

Battery groupBCI 34 · 600 CCAOEM · verified

Tire sizeP235-65R17OEM · verified

OE service part numbers OEM · verified

Engine oil filter	04781452BF alt 05003558AB
Engine air filter	05018777AC
Fuel filter	52129238AA discontinued
Spark plug	SPZFR6F11G
Battery	BB34F101AA alt 04609365AE
Front wiper blades	05066974AA
Serpentine belt	53013905AE alt 05072437AC
Thermostat	68174083AA alt 05066806AA

Full specifications

Engine, drivetrain, dimensions and economy.

Engine & drivetrain NHTSA vPIC

Transmission

Automatic 4-spd

Dimensions & weight NHTSA vPIC

Overall length	166.1 in
Overall width	71.7 in
Overall height	70.5 in
Wheelbase	104.3 in
Curb weight	4010 lb
Track (front / rear)	60.2 / 59.8 in
Weight distribution (front / rear)	55/45

Ratings & economy EPA / vPIC

EPA city / highway / combined	15 / 21 / 17 mpg
Drivetrain	Rear-Wheel Drive
Recommended fuel	Regular Gasoline

Performance & power Independent road tests

0–60 mph, quarter-mile, horsepower and torque from independent road tests.

Independent published road-test results.

9.4 sec0–60 mph (tested)quickest 9.40 sec — 2006 Renegade

210 hpHorsepower (as tested)

235 lb-ftTorque (as tested)

Year	Trim / engine	0–60	¼ mile	HP	Drivetrain
2006	Renegade 3.7L V6	9.40 sec	16.90 sec	210 hp	4x4
2004	Limited 3.7L V6	9.60 sec	16.89 sec	210 hp	4x4
2002	Limited Edition 3.7L V6	8.80 sec	16.70 sec	210 hp	4x4
2002	Limited Edition 3.7L V6	10.00 sec	17.50 sec	210 hp	4x4

Service quick specs OEM factory data

Capacities, torques and tune-up values from the factory service manual.

This engine holds 5 qt w/ filter of 5W-30 API engine oil, Front: 80W-; Rear: 198RB in the differential, DOT 3 brake fluid. Torque lug nuts to 95 ft-lbs, the oil drain plug to 25.0 ft-lbs. The firing order is 1-6-5-4-3-2. Note the cylinder-head bolts finish on a torque angle (torque-to-yield) — they stretch permanently and should be replaced, not reused, during any head service.

Lubricants & capacities

Automatic Transmission Fluid	ATF+4
Automatic Transmission Fluid Capacity	4
Automatic Transmission Fluid	ATF+4
Automatic Transmission Fluid Capacity	5
Brake Fluid	DOT 3
Differential Gear Oil	Front: 80W-; Rear: 198RB
Differential Gear Oil Capacity	2.6 Pints mvc Front
Differential Gear Oil	Front: 80W-; Rear: 198RB

Engine torques

Crankshaft Pulley and/or Damper Bolts	130 ft-lbs
Crankshaft Pulley and/or Damper Bolts	129 ft-lbs
Engine Flywheel Bolts	70 ft-lbs
Intake Manifold to Engine Bolts	8.8 ft-lbs
Exhaust Manifold to Cylinder Head Bolts	18 ft-lbs
Engine Oil Pan Drain Plug	25.0 ft-lbs
Oil Pump to Cylinder BLock Bolts/Studs	21 ft-lbs

Chassis torques

Lug Nuts	95 ft-lbs
Front Wheel Hub	100 ft-lbs

Ignition

Cylinder Firing Order	1-3-4-2
Cylinder Firing Order	1-6-5-4-3-2
Spark Plug Manufacturer	Champion
Spark Plug Gap	0.042 in
Spark Plug Torque	11.0 ft-lbs

Battery & A/C

Refrigerant	R134a
Refrigerant Capacity	1.63 lbs
Oil Group	PAG
Oil Type	SP-15
Oil Capacity	8.00 oz
Standard BCI Group Number	34
Standard BCI Cranking Performance	600 cca

Service checks

Pressure Test	16 psi
Radiator Cap Pressure Relief	18-21 psi
Thermostat Opening Temperature	195 °F
Regulated Fuel System Pressure (With Vacuum)	56-60 psi
Engine Compression	170-225 psi
Engine Oil Pressure	25-110 psi
Engine Oil Pressure RPM	3000 rpm
Intake Valve Lash	Hydraulic in

Brakes

Torque Caliper to Bracket	11 ft-lbs / 18 ft-lbs
Minimum Pad Thickness	0.030 in
Minimum Shoe Thickness	0.030
Rotor Max Parallel Variation	0.0006 in / 0.0007 in
Rotor Runout Limit	0.004 in
Rotor Nominal Thickness From	1.102 in / 0.472 in
Rotor Nominal Thickness To	1.102 in / 0.472 in
Rotor Minimum Machining	1.024 in / 0.433 in

Multi-step torque procedures OEM · verified

Connecting Rod (Large End) Bearings — tightening sequence 1 stages

20 ft. lbs., Step 2: 90

20 ft. lbs

Cylinder Head — tightening sequence 4 stages

Prep Lubricate bolt threads with clean engine oil · M8 bolts 9-12, coat bolt heads with lock and seal adhesive

1	bolts 1-8	20 ft. lbs
2	bolts 1-8	20 ft. lbs
2	bolts 9-12	10 ft. lbs
3	bolts 1-8	90 degrees
4	bolts 1-8	90 degrees
4	bolts 9-12	19 ft. lbs

Main Bearings — tightening sequence 5 stages

Prep Install the bedplate retaining bolts, making sure to place the stud bolts in the correct location, Torque the bolts in the sequence shown.

1	Hand tighten bolts 1D, 1G and 1F until the bedplate contacts the block.
2	Tighten bolts 1A - 1J to 40 ft. lbs.	40 ft. lbs
3	Tighten bolts 1 - 8 to 5 ft. lbs.	5 ft. lbs
4	Turn bolts 1 - 8 an additional 90 degrees.	90 degrees
5	Tighten bolts A - E 20 to 20

Factory maintenance schedule OEM · verified

Normal service, condensed from the factory interval matrix.

Under the factory schedule, replace the engine oil and filter every 6,000 mi; spark plugs every 30,000 mi; coolant every 60,000 mi. The big-interval services (every 60,000 mi for coolant, and the transmission fluid) are the ones owners most often skip — on a lower-mileage example, assume the original fluids are still in it and check them first.

Every 6,000 mi	Brake Line (inspect) · Engine Oil Filter (replace) · Exhaust System (Complete) (inspect) · Tire & Wheel Assembly (rotate)
Every 12,000 mi	Steering Linkage (inspect)
Every 12,500 mi	Transmission Assembly (inspect fluid level)
Every 18,000 mi	Brake Linings (inspect) · Disc Brake Caliper Guide Pin (lubricate)
Every 30,000 mi	Accessory Drive Belt (inspect) · Engine Air Filter Element (inspect) · Spark Plugs (replace)
At 60,000 mi	Accessory Drive Belt (inspect)
Every 60,000 mi	Engine Coolant System (drain, flush & refill) · PCV Valve (inspect)
At 120,000 mi	Transfer Case Assembly (drain & refill)

Owner how-tos

Condensed service procedures for routine maintenance. Procedures that require dealer diagnostic equipment are identified and summarized only.

Common procedures

Key fob — remote (RKE) programming programming new fob buttons Dealer tool OEM · verified

Tool required	DRBIII scan tool (dealer / locksmith)
Why	Transmitter codes are written into the receiver in the passenger door module

Anti-theft (SKIS) — module initialization after immobilizer module replacement Dealer tool OEM · verified

When needed	After Sentry Key Immobilizer Module (SKIM) replacement
Tool required	DRBIII scan tool
Also required	The vehicle's four-digit PIN code

Reliability & federal safety record

Owner-reported issues, recalls, investigations and service bulletins on record with NHTSA — an unfiltered look at what owners actually experience.

The 2006 Jeep Liberty sits at the peak of a troubling trend that began in 2002, when complaints surged to 1,807 and recalls reached 14, and continued through 2006 with 1,368 complaints and 10 recalls before dropping sharply afterward. In the immediate years surrounding 2006, complaints fell to 703 in 2007 and 540 in 2008, with recalls declining to 7 and 5 respectively, indicating a clear improvement trend post‑2006. The 2006 model’s complaints are dominated by visibility (334), suspension (141), fuel/propulsion (123), and fuel system (105) issues, and it also reports 39 crash and 19 fire complaints, higher than the 2005 level but still within the broader downward trend. These figures suggest that 2006 is part of the high‑complaint arc rather than the declining phase, implying that buyers should be cautious. Consequently, 2006 is not the most reliable year in the Liberty generation, and a later model year would likely offer a safer purchase.

Open recalls

NHTSA campaigns

Service bulletins

Manufacturer communications

ODI investigations

Office of Defects Investigation

1,368

Owner complaints

39 involved a crash · 19 a fire

NHTSA crash-test rating federal NCAP · out of 5 stars

Rollover★★★★★

Owner complaints by model year NHTSA · this generation & adjacent

’00 ’01 ’02 ’03 ’04 ’05’06’07 ’08 ’09 ’10 ’11 ’12

Owner complaints filed with NHTSA, by component

All 1,368 complaints on record, top 8 components.

Visibility334

Suspension141

Fuel/Propulsion System123

Fuel System, Gasoline105

Electrical System66

Fuel System, Gasoline,Structure64

Power Train43

Unknown Or Other34

Source: NHTSA Office of Defects Investigation complaint database.

Recalls NHTSA · verified

Showing 2 of 10 campaigns on record for this vehicle.

18V278000Suspension:RearReported 01/05/2018

Chrysler (FCA US LLC) is recalling certain 2004-2007 Jeep Liberty vehicles. The rear suspension lower control arms can fracture due to excessive corrosion, causing a loss of vehicle control. Remedy: Chrysler will notify owners, and dealers will replace the rear lower control arms, free of charge. The recall began June 26, 2018. Owners may contact Chrysler customer service at…

05V460000Power Train:Automatic TransmissionReported 06/10/2005

ON CERTAIN PICKUP TRUCKS, SPORT UTILITY AND PASSENGER VEHICLES EQUIPPED WITH 42RLE AUTOMATIC TRANSMISSIONS, THE CUP PLUG THAT RETAINS THE PARK PAWL ANCHOR SHAFT MAY BE IMPROPERLY INSTALLED. IF THE SHAFT MOVES OUT OF… Remedy: DEALERS WILL INSPECT THE TRANSMISSIONS AND INSTALL A BRACKET TO ENSURE THE PARK PAWL ANCHOR SHAFT IS RETAINED IN THE PROPER POSITION. THE RECALL BEGAN ON NOVEMBER 28, 2005. OWNERS…

Technical service bulletins NHTSA · verified

Showing 5 of 62 bulletins on record with NHTSA.

Bulletin	Date	Component	Summary
9004009	2021-04-07	Power Train	Transmission Kit with Torque Converter 1. All Promaster (VF) 3.6L/62TE equipped vehicles…
9001784	2021-02-22	Power Train	Mechanical rocker arm, intake, 1.7 ratio.
9001784	2021-02-22	Equipment	Mechanical rocker arm, intake, 1.7 ratio.
9004275	2020-07-22	Electrical System	KEY, Master If replacing the key/FOBIK on a WJ, KJ, TJ, or PT Cruiser, use the "AC" NIC…
9004275	2020-07-22	Electrical System	KEY, Master If replacing the key/FOBIK on a WJ, KJ, TJ, or PT Cruiser, use the "AC" NIC…

Common OBD-II trouble codes

The most common OBD-II codes for this vehicle's emissions system. These are standardized SAE J2012 definitions, not vehicle-specific fault reports.

P0420

Catalyst system efficiency below threshold — Bank 1

P0300

Random / multiple cylinder misfire detected

P0171

System too lean — Bank 1

P0455

Evaporative emission system leak detected — large leak

P0128

Coolant thermostat below regulating temperature

P0442

Evaporative emission system leak detected — small leak

VIN tools

Decode factory build data for a specific vehicle by VIN.

VIN

Decode a VIN to confirm the transmission and build data for a specific Liberty. OEM

Build data

Plant, GVWR class, engine and body data for any 17-character VIN.

Recalls

Check open recall campaigns against a specific vehicle by VIN.

Vehicles with shared specs

Find every vehicle that shares this one's battery, bulbs, oil capacity, platform or parts.

Group 34 battery Vehicles taking 5 qt w/ filter KJ-platform vehicles Engine oil filter 04781452BF Engine air filter 05018777AC Fuel filter 52129238AA Spark plug SPZFR6F11G

Reference guides

Cross-vehicle references for the kinds of data on this page.

Vehicle recalls & TSBs OBD-II trouble codes Torque specifications Maintenance schedules Fluid capacities & specs

Frequently asked

How much oil does the 2006 Liberty 3.7L take?

5 qt w/ filter of 5W-30 API, per the factory manual.

Does the 2006 Liberty have open recalls?

NHTSA lists 10 recall campaign(s) for this model year. Check your specific vehicle by VIN.

What gas mileage does the 3.7L get?

EPA figures are 15 city / 21 highway / 17 combined mpg.