If you own a 2017 Jeep Wrangler, you already have one of the most capable off-road SUVs ever built. But to unlock its true potential, you need to know how to properly engage 4-wheel drive (4WD).
Whether you’re heading into mud, sand, snow, or rocky trails, this complete guide will walk you through:
- The different 4WD modes
- Step-by-step instructions
- When to use 2H, 4H, and 4L
- Common mistakes to avoid
- Pro off-road tips
Let’s dive in.
Understanding the 4WD System in the 2017 Wrangler
The 2017 Jeep Wrangler (JK) comes with a part-time 4WD system, meaning:
- It normally runs in 2H (2-wheel drive)
- You manually shift into 4WD when needed
- It should NOT be used in 4WD on dry pavement
Most 2017 models come with either:
- Command-Trac
- Rock-Trac (Rubicon trims)
Both systems operate similarly but have different gear ratios in 4L.
What the Transfer Case Lever Positions Mean
Next to your gear shifter, you’ll see a smaller lever labeled:
2H – 4H – N – 4L
Here’s what each mode does:
1. 2H (Two-Wheel Drive High)
- Rear wheels only
- Best for normal driving
- Use on dry pavement
- Better fuel economy
2. 4H (Four-Wheel Drive High)
- All four wheels engaged
- For slippery roads
- Snow, mud, sand, gravel
- Can be used at higher speeds (up to ~55 mph)
3. N (Neutral)
- Disconnects drivetrain
- Used for flat towing behind an RV
4. 4L (Four-Wheel Drive Low)
- Maximum torque
- Slow-speed off-roading
- Rock crawling
- Steep hills
How To Put 2017 Jeep Wrangler In 4 Wheel Drive (Step-by-Step)
How To Shift From 2H to 4H
This is the most common 4WD shift.
Steps:
- Keep your Wrangler moving slowly (under 45 mph).
- Keep your foot on the gas lightly (steady speed).
- Firmly pull the transfer case lever from 2H → 4H.
- You may feel resistance — that’s normal.
- A 4WD indicator light will appear on the dashboard.
✅ No need to stop.
✅ No need to put it in neutral.
How To Shift Into 4L (Low Range)
You MUST stop the vehicle first.
Steps:
- Bring the Jeep to a complete stop.
- Put the transmission in Neutral (N).
- Firmly pull the transfer case lever past 4H into 4L.
- Wait for the 4WD Low indicator light.
- Put transmission back into Drive (or 1st gear for manual).
⚠ It may require a firm pull. That’s normal.
How To Shift Back To 2H
From 4H:
- Simply pull lever back to 2H while driving slowly.
From 4L:
- Stop completely.
- Put transmission in Neutral.
- Shift transfer case to 4H.
- Then shift to 2H once moving slowly.
When Should You Use Each Mode?
Here’s a quick reference table:
| Driving Condition | Mode |
|---|---|
| Daily highway driving | 2H |
| Rainy roads | 2H |
| Snow-covered roads | 4H |
| Mud trails | 4H |
| Sand dunes | 4H |
| Rock crawling | 4L |
| Steep mountain descent | 4L |
Important Warnings (Very Important)
❌ Do NOT Use 4H or 4L on Dry Pavement
The 2017 Wrangler has a part-time 4WD system.
Using 4WD on dry roads can cause:
- Drivetrain binding
- Transfer case damage
- Axle stress
- Expensive repairs
Always switch back to 2H when traction improves.
❌ Don’t Force the Lever
If it won’t shift:
- Slightly roll forward
- Ease off the gas
- Try again firmly (but not violently)
❌ Don’t Use 4L at High Speeds
4L is designed for:
- Speeds under 25 mph
- Maximum torque situations
Driving fast in 4L can damage your drivetrain.
Special Notes for Rubicon Models
If you own a Rubicon version of the Jeep Wrangler Rubicon, you likely have:
- Rock-Trac 4:1 low-range ratio
- Electronic sway bar disconnect
- Locking differentials
In 4L, your Jeep becomes extremely capable for:
- Rock crawling
- Deep mud
- Technical trails
Always engage lockers only when needed.
Common 4WD Problems & Quick Fixes
4WD Light Blinking?
- Drive slowly in a straight line
- It may take a few seconds to engage fully
Stuck in 4L?
- Stop completely
- Put transmission in Neutral
- Roll slightly forward
- Shift firmly to 4H
Grinding Noise?
- You likely didn’t shift into Neutral before 4L
- Stop immediately and re-shift properly
Pro Off-Road Driving Tips
If you plan to take your 2017 Wrangler off-road regularly:
✔ Lower Tire Pressure
- Improves traction in sand and rocks
- Reinflate before highway driving
✔ Use Momentum in Sand
- 4H is best
- Avoid stopping completely
✔ Use Engine Braking in 4L
- Great for steep descents
- Reduces brake overheating
Frequently Asked Questions
Can I shift into 4H while driving?
Yes. As long as you’re under about 45–55 mph.
Do I need to use 4WD in rain?
No. Only use it when roads are slippery enough to cause wheel spin.
Does using 4WD improve gas mileage?
No. It reduces fuel economy slightly.
How often should I engage 4WD?
It’s good practice to engage 4H occasionally (once a month) to keep components lubricated.
Final Thoughts
Learning how to put your 2017 Jeep Wrangler in 4 wheel drive is simple once you understand the system.
Remember:
- 2H for normal driving
- 4H for slippery conditions
- 4L for serious off-road situations
- Never use 4WD on dry pavement
Used correctly, your Wrangler’s 4WD system will last for years and handle terrain most SUVs can’t touch.
