2009 Jeep Wrangler JK

2009 Jeep Wrangler X 4WD 2dr

• MPG: Up to 15 city / 20 highway
• Towing capacity: 1,000 to 3,500 lbs
• Engine: 3.8 L V6
• Horsepower: 202 hp
• Other model years: 2007, 2008, 2010, 2011

Engine

Engine Spec

   Cylinder configuration: V-6
   Drive type: four-wheel
   Engine liters: 3.8
   Fuel tank capacity: 18.6gal.
   Horsepower: 202hp @ 5,200RPM
   Number of valves: 12
   Recommended fuel: Regular Unleaded
   Torque: 237 lb.-ft. @ 4,000RPM
   Transmission: 6 speed manual
   Transmission: 4 speed auto

Oil

   3.8L V-6 : 
   Engine Oil Viscosity Grade/Weight:   5W-20
   6 Quarts / 5.7 Liters

Spark Plug

   3.8L V-6 Only : Gap 0.050" / Champion Platinum or equivalent 0.050 in / 1.27 mm
   3.6L uses less gap at only 0.043 in / 1.10 mm

Wheels

Tire size for Jeep Wrangler JK Unlimited X 4x4: P255/75R17 113S

The original factory tire size - P255/75R17 113S

• 255 millimeters wide
• 75 sidewall height rim/tread %
• 17 rim size inches diameter

Rim details:

• 17x7.5 ET44.45
• Bolt Pattern: 5x5 PCD: 5' (or 127 mm)
• PCD 5x127
• lug thread: M14 x 2.00
• lug thread pitch: 2.00
• Center bore: 71.5 mm
• lug torque: 130 Nm

LUG PATTERN METRIC 5x127mm, LUG PATTERN INCHES 5x5 in, STUD SIZE 1/2x20, HUB/CENTER BORE 71.5

Rim Manufacturer Part Number 51649 DI

2009 Year Upgrades

Chrysler updated the 2009 model with Hill Start Assist (HSA) to help prevent rollback on graded surfaces, and then incorporated Trailer Sway Control (TSC) that monitored vehicle movement while towing, relative to its intended path.

A new center dome lamp with directional lighting, drop in center console bin, and cargo nets for additional storage were added to the interior although mine did not have said cargo nets.

All 2-door Wranglers came with a 2,000lb maximum towing capacity. The JK 2 door came with a standard 3.6L V6 engine which pushed out 202hp, 237 ft-lbs of torque. Wrangler X vehicles also ran with 16 inch wheels.

Features such as front and rear solid axles, hard or soft top options, removable doors and mirrors, two-speed transfer case, fold down windshield and full size tailgate-mounted spare tire remained standard.

Miscellaneous

Disable seat-belt alarm

1. Turn the ignition switch to the OFF position, and buckle the driver’s seat belt.
2. Turn the ignition key to the ACCESSORY/RUN position (engine does not need to be running), and wait for the Seat Belt Warning Light to turn off.
3. Within 60 seconds of starting the vehicle, unbuckle and then re-buckle the driver’s seat belt at least three times within 10 seconds, ending with the seat belt buckled.
4. Turn the ignition key to the OFF position. A single chime will sound to signify that you have successfully completed the programming.

The Enhanced Warning System (BeltAlert) can be reactivated by repeating this procedure.

The important steps are:

• DO NOT START THE JEEP.
• Get in
• Buckle-up
• Turn the key to ACC on.
• Once the seat belt dummy light goes out, unbuckle and buckle 3 or more times.
• Turn off and remove the key. You should hear a confirmation tone.

Disable security alarm

• It might be possible to disable the security alarm by the removal of a specific fuse. Fuse M13 (see fuse section). This will also likely disable the keyless entry option. Removal of fuse M13 does not disable the alarm.

Security alarm problems

The security alarm goes off for a number of reasons, it is triggered too easily.

Unlocking the doors with the manual door lock plungers or the driver’s door lock cylinder will not disarm the Vehicle Security Alarm.

The Sentry Key Immobilizer System prevents unauthorized vehicle operation by disabling the engine. The system does not need to be armed or activated. Operation is automatic, regardless of whether the vehicle is locked or unlocked. The system uses ignition keys that have an embedded electronic chip (transponder) to prevent unauthorized vehicle operation. Therefore, only keys that are programmed to the vehicle can be used to start and operate the vehicle. The system will shut the engine off in two seconds if someone uses an invalid key to try to start the engine.

fuses

fuses

Cavity Cartridge Fuse Mini Fuse Description

J1 40 Amp Green Power Folding Seat

J2 30 Amp Pink Transfer Case/Pwr Liftgate Module

J3 40 Amp Green Rear Door Module (RR DOOR NODE)

J4 25 Amp Natural Driver Door Node

J5 25 Amp Natural Passenger Door Node

J6 40 Amp Green Anti-Lock Brake System (ABS) Pump/ESP

J7 30 Amp Pink Anti-Lock Brake System (ABS) Valve/ESP

J8 40 Amp Green Power Memory Seat (If Equipped)

J9 40 Amp Green PZEV Motor/Flex Fuel

J10 30 Amp Pink Headlamp Wash Relay/Manual Tuning Valve

J11 30 Amp Pink Sway Bar/THATCHAM Lock-Unlock/Power Sliding Door Module

J13 60 Amp Yellow Ignition Off Draw (IOD) — Main

J14 40 Amp Green EBL (Rear Window Defogger)

J15 30 Amp Pink Rear Blower

J17 40 Amp Green Starter Solenoid

J18 20 Amp Yellow Powertrain Control Module (PCM) Trans Range

J19 60 Amp Yellow Radiator Fan

J20 30 Amp Pink Front Wiper LO/HI

J21 20 Amp Yellow Front/Rear Washer

J22 25 Amp Natural Sunroof Module

M1 15 Amp Blue Center High Mounted Stop Light (CHMSL)/Brake Switch

M2 20 Amp Yellow Trailer Lighting

M3 20 Amp Yellow Frt/Rear Axle Lockers

M4 10 Amp Red Trailer Tow

M5 25 Amp Natural Inverter

M6 20 Amp Yellow Power Outlet #1/Rain Sensor

M7 20 Amp Yellow Power Outlet #2 (BATT/ACC SELECT)

M8 20 Amp Yellow Front Heated Seat

M9 20 Amp Yellow Rear Heated Seat (If Equipped)

M10 20 Amp Yellow Ignition Off Draw — Vehicle Entertainment System (IOD-VES), Satellite Digital Audio Receiver (SDARS), DVD, Hands Free Module (HFM), RADIO, Antenna (ANT), Universal Garage Door Opener (UGDO), Vanity Lamp (VANITY LP)

M11 10 Amp Red (Ignition Off Draw) IOD-HVAC/ATC, MW SENSR, Underhood Lamp (UH LMP)

M12 30 Amp Green Amplifier (AMP)

M13 20 Amp Yellow Ignition Off Draw— Cabin Compartment Node (IOD-CCN), Wireless Control Module (WCM), SIREN, Clock Module (CLK MOD), Multi-Function Control Switch (MULTIFCTN SW)

M14 20 Amp Yellow Trailer Tow (Export Only)

M15 20 Amp Yellow COL MOD, IR SNS, Heater Ventilation, Air Conditioning/Automatic Temperature Control (HVAC/ATC), Rear View Mirror (RR VW MIR), Cabin Compartment Node (CCN), Transfer Case Switch (T-CASE SW), RUN/ST, Multi-Function Control Switch (MULTIFTCN SW), Tire Pressure Monitor (TPM), Glow Plug Module (GLW PLG MOD) — Export Diesel Only

M16 10 Amp Red Occupant Restraint Controller/Occupant Classification Module (ORC/OCM)

M17 15 Amp Blue Left Tail/License/Park Lamp (LT-TAIL/LIC/PRK LMP)

M18 15 Amp Blue Right Tail/Park/Run Lamp (RT-TAIL/PRK/RUN LMP)

M19 25 Amp Natural Auto Shut Down (ASD #1 and #2)

M20 15 Amp Blue Cabin Compartment Node Interior Light (CCN INT LIGHT), Switch Bank (SW BANK), Steering Control Module (SCM)

M21 20 Amp Yellow Auto Shut Down (ASD #3)

M22 10 Amp Red Right Horn (RT HORN (HI/LOW)

M23 10 Amp Red Left Horn (LT HORN (HI/LOW)

M24 25 Amp Natural Rear Wiper (REAR WIPER)

M25 20 Amp Yellow Fuel Pump (FUEL PUMP), Diesel Lift Pump (DSL LIFT PUMP) — Export Only

M26 10 Amp Red Power Mirror Switch (PWR MIRR SW), Driver Window Switch (DRVR WIND SW)

M27 10 Amp Red Ignition Switch (IGN SW), Window Module (WIN MOD)

M28 10 Amp Red Next Generation Controller (NGC), Transmission Feed (TRANS FEED), J1962

M29 10 Amp Red Occupant Classification Module (OCM)

M30 15 Amp Blue Rear Wiper Module (RR WIPER MOD), Power Folding Mirror (PWR FOLD MIR)

M31 20 Amp Yellow Back-Up Lamps (B/U LAMPS)

M32 10 Amp Red Occupant Restraint Controller (ORC), TT EUROPE

M33 10 Amp Red Next Generation Controller (NGC), Global Powertrain Engine Controller (GPEC)

M34 10 Amp Red Park Assist (PRK ASST), Heater Ventilation, Air Conditioning Module (HVAC MOD), Headlamp Wash (HDLP WASH), Compass (COMPAS)

M35 10 Amp Red Heated Mirrors

M36 20 Amp Yellow Power Outlet #3 (BATT)

M37 10 Amp Red Anti-Lock Brake System (ABS) , Electronic Stability Program (ESP), Stop Lamp Switch (STP LP SW), Fuel Pump Rly Hi Control

M38 25 Amp Natural Lock/Unlock Motors (LOCK/UNLOCK MTRS)

illustration and description credit to RobertK of Jeep Forum.com

Accessories

snow plow

light duty snow plow options

• https://www.wranglerforum.com/f274/snow-plow-124364.html
• https://www.wranglerforum.com/f202/snow-plow-blades-what-do-you-recommend-1424754.html

spare tire area alternatives

Hooke Road JK Tailgate Storage Box

• https://www.hookeroad.com/collections/jeep-jk-racks-offroad-storage/products/tailgate-spare-tire-carrier-outer-storage-lock-box-jeep-wrangler-jk-b2085s

extra lighting

KC HiLiTES Windshield Mount Light Bar with 5 Apollo Pro Series Lights:

• KC HiLiTES Windshield Mount Light Bar with 5 Apollo Pro Series Lights for 07-18 Jeep Wrangler JK

Issues

Death Wobble

Described as a lack of control by cause of shaking in the steering and frame typically at speeds in excess of 55mph and possibly triggered by a bump or depression in the road. This condition makes the jeep very difficult to control, thus presenting a danger to motorists.

The high level of shaking and vibration root cause is usually an issue with the vehicle's components, most commonly the suspension. Track bar bushings, tie rods, and ball joints become worn over time and are primary factors in the death wobble condition. Misaligned wheels can also cause a lot of imbalance in your entire suspension system. According to sources the primary culprit is the track bar.

Chrysler produces the Jeep Wrangler. They recalled recalled over 190,000 Wranglers from 2018 and 2019 to replace the front suspension steering damper. Yet, this did not seem to resolve the issue for many owners. Chrysler refuses to acknowledge the Jeep Death Wobble as a legitimate problem n previous model years including the 2009 Jeep Wrangler. The problem is related to the design of the Jeep Wrangler itself. A design that makes the Jeep so good at off road and rough terrain also works against the Jeep at higher speed highway stability when parts become worn.

Defective Chrome Cap Lug Nuts

Chrysler manufacturer used a two-piece lug nut that has a chrome cap over the steel lug nut. The problem with these lug nuts is that water and salt gets between the nut and cap. The resulting corrosion causes the cap to swell and change the outer diameter of the nut. For the driver, this often means the lug wrench in the trunk will no longer fit when they need to change a tire by the side of the road. Severe corrosion can cause the chrome cover to fall off and expose the steel nut underneath. You can end up stranded on the side of the road if you can’t remove the lug nuts to change a flat tire.

It is recommended that you replace the factory chrome cap lug nuts with a solid chrome replacement lug nut. Although they are different in appearance, they will resolve the issue of the defective swollen lug nuts. If you go with the solid lug nut replacement, make sure they are long enough and have the correct size hex for your lug wrench.