Jeep Wrangler 2021 Quick Start Guide
![Jeep Wrangler 2021 SUV manual cover](/images/jiwJIDDdzAZprpvLiHuAkHwD/thumbs/thumb175x175.webp)
To perform a soft reset on the Uconnect system, press and hold the volume and tuner knobs simultaneously for about 10 to 15 seconds. The screen will go black and then reboot, indicating a successful reset.
The recommended tire pressure for the 2021 Jeep Wrangler is generally 36 PSI for both front and rear tires. However, always refer to the sticker on the driver's side door jamb for the most accurate information.
To disable the Auto Start-Stop feature, press the Auto Start-Stop button located on the dashboard. This will turn off the feature temporarily for the current driving cycle.
To engage 4WD, bring the vehicle to a complete stop, then shift the transfer case lever from 2H to 4H for high-speed four-wheel drive. For low-speed four-wheel drive (4L), you should be moving at 2-3 mph, then shift from 4H to 4L.
It is recommended to change the oil every 6,000 miles or every 6 months, whichever comes first. Always use the type of oil specified in your owner's manual.
If you experience battery drain, check for any lights or accessories left on, ensure the battery terminals are clean and tight, and have the battery and alternator tested for proper operation.
To replace a headlight bulb, open the hood and remove the headlight housing by unscrewing the bolts. Disconnect the wiring harness, remove the old bulb, insert the new bulb, and reconnect the wiring before securing the housing back in place.
The 2021 Jeep Wrangler typically requires Mopar Antifreeze/Coolant 10 Year/150,000 Mile Formula OAT (Organic Additive Technology). Always check your owner's manual for exact specifications.
To update the navigation maps, visit the Uconnect website and download the latest map update onto a USB drive. Insert the USB drive into the vehicle's USB port and follow the on-screen prompts to complete the update.
If the air conditioning is not working, check the refrigerant levels, inspect the fuses and relays for the AC system, and ensure the AC compressor is engaging. If the issue persists, seek professional diagnostic help.