Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
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HOMESERVICE MANUALSJEEP2009WRANGLER 2WD V6-3.8LREPAIR AND DIAGNOSISSTARTING AND CHARGINGBATTERYSERVICE AND REPAIRPROCEDURESBATTERY RECONNECTION
2009 Jeep Wrangler 2WD V6-3.8L
Battery Reconnection
2009 Jeep Wrangler 2WD V6-3.8LSECTION Battery Reconnection
BATTERY RECONNECTION
NOTE: This reconnection procedure is to be performed anytime the battery has been disconnected.
1. Connect the battery negative cable to the battery post and tighten the clamp nut.
2. Install the rear compartment floor trim panel.
CAUTION: Once the battery has been connected, review and perform the following information as applicable.
ELECTRONIC STABILITY PROGRAM (ESP)
If the vehicle is equipped with ESP, once the battery is reconnected, the Steering Angle Sensor (SAS) in the clockspring needs to be calibrated. The SAS requires calibration anytime the battery or an ABS (ESP) component has been disconnected for any length of time. If the SAS is not calibrated following battery reconnection, the ESP/BAS indicator lamp is illuminated following five ignition cycles indicating the need for calibration.
To calibrate, perform the following:
1. Start the engine.
2. Center the steering wheel.
3. Turn the steering wheel all the way to the left until the internal stop in the steering gear is met, then turn the wheel all the way to the right until the opposite internal stop in the steering gear is met.
4. Center the steering wheel.
5. Stop the engine.
RENDER: 1.0x
NO RELATED
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.