If your Jeep Grand Cherokee air suspension isn’t working, resetting the system may solve the problem.
If you are an auto novice, you probably don’t know how to reset your air suspension. But that will change in the next few minutes.
By the end of this article, you’ll be able to reset your air suspension with ease. You’ll even discover the causes of air suspension issues and how to fix them.
To reset the air suspension in your Jeep Grand Cherokee, you need to remove your positive battery cable and air suspension fuses. Then reconnect the fuses and let your engine run for 8 minutes to complete the reset.
Keep reading for a step-by-step guide on how to reset the air suspension in a Jeep Cherokee.
Reset Instructions for Jeep Grand Cherokee Air Suspension
Here’s how to reset the air suspension system in your Jeep Grand Cherokee:
- Locate your Jeep Grand Cherokee battery under the passenger seat and disconnect the positive (+) battery cable. Then wait 5 minutes.
- Using your fuse diagram, locate the following fuses in your under-hood fuse panel: F05, F50, and F87.
- Remove the fuses and reinsert them immediately.
- Turn on your engine.
- Let your engine run for 8 minutes.
- You have completed the reset.
After resetting your air suspension system, test it by changing your lift height. If the suspension doesn’t work, you can try the other tips that we’ll be sharing shortly.
And if you’re not sure where the fuse box for your Jeep Grand Cherokee is located, see this video:
Causes of Air Suspension Problems in Jeep Grand Cherokee
Faulty Air Suspension System
The air suspension system in your Jeep Grand Cherokee is an electronic unit. This makes the system susceptible to functional errors and glitches. A functional error in your air suspension system can cause poor handling, making your tires wear out quickly.
To fix this issue, you’ll need to reset your air suspension system.
Leaky Air Shocks
Leaky air shocks are a major cause of air suspension problems in Jeep Grand Cherokee vehicles. Because these components work consistently to ensure comfortable rides, they often wear out and leak.
Once your air shocks start leaking, your vehicle won’t get enough pressure to maintain a stable height while you are driving. As a result, your car may scrape the road during a ride.
To check if your air shocks are leaky, listen for a hissing noise from your engine. If the noise is faint, your air shocks may only have a small leak. However, if the noise is loud, you might be dealing with a huge puncture.
If you suspect that your air shocks are leaky, you should replace them.
Your Jeep Cherokee air suspension system may not work properly because the sensors in the system have gone bad.
Your air suspension system has two sensors: the pressure sensor and the ride height sensor. When the air pressure in your air shocks rises, your pressure sensor detects the change and reports it to the ECU.
Likewise, the height sensor tracks the difference between your car’s underside and the road and sends the signal to the ECU. The ECU then uses this information to adjust the height of your vehicle appropriately.
If the pressure and height sensors are bad, your ECU won’t detect that your air pressure and ride height have changed. This means that your vehicle will stay lowered until you stop driving.
In some cases, bad sensors may deliver wrong signals to the ECU. For instance, a pressure sensor might indicate that the pressure in the air shocks is higher or lower than it actually is. In return, the ECU might make your vehicle too soft or too stiff.
If your car is too stiff, your pressure sensor might be faulty. In contrast, if your tires are not leveled, you probably have a bad height sensor. Determine the problematic sensor and change it.
Rusty Air Lines
Damaged air line fittings can also affect the performance of the air suspension system in your Jeep Grand Cherokee.
The air lines transport air pressure from the compressor to your air shocks. If these lines become rusty, all the air pressure coming from your compressor will escape before they reach the shocks. Without this pressure, your suspension system won’t work.
Rough rides and uneven tire wear are the most common signs of rusty air lines in a Jeep Grand Cherokee. If you notice these signs, try fixing the rusty areas in your air lines with a sealant. If this doesn’t fix the problem, you’ll need to replace the lines.
Other Ways to Troubleshoot Air Suspension Problems in a Jeep Grand Cherokee
Seal the Leaks in the System
Save a reset, sealing the leaks in your suspension system is a quick way to troubleshoot the problems in the system. All you have to do is to locate the leak and repair it with a sealant. Leaks usually occur in the air shocks and air line fittings.
If you’ve decided to apply this method, you’ll need to buy a durable sealant. We recommend using the Loctite 545 sealant to fix your air suspension leaks.
Please note that this method is temporary. Even if you use the strongest sealant in the market, the leak will reappear after a short period. You still have to replace the leaky parts in your air suspension if you want a permanent fix to the problem.
Change the Faulty Parts
A more permanent method for repairing air suspension issues in your Jeep Grand Cherokee is to replace the faulty parts in the system. The defective component in your air suspension system could be air shocks, air lines, pressure, or height sensors.
Air shocks and air lines are easy to remove and replace. This is because they are visible on the engine bay and don’t require any tools for their removal.
Changing the pressure and ride height sensors is more complicated. The ride height sensor is attached to the axle between your front wheels. So, you have to remove your tires from the wheels to gain access to the height sensor.
On the other hand, the pressure sensor is behind the alternator on the throttle body. You need a socket and ratchet to pull out the alternator before removing your pressure sensor.
Cost of Replacing/Fixing Air Suspension System in a Jeep Grand Cherokee
According to repairpal.com, the average air suspension system replacement in a Jeep Grand Cherokee cost between $2,711 and $3,225. The price of the parts often takes the lion’s share of this amount, as they can cost as much as $2,500.
Since most dealers only charge a small fee for the installation, you should consider hiring a professional to fix your air suspension system.
If you only have to fix a part of your air suspension system, you won’t spend so much money. For instance, replacing most air shocks in the Jeep Grand Cherokee will only cost you about $155, as stated by yourmechanic.com.
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Now that you know how to reset the air suspension system in your Jeep Grand Cherokee, you can apply the solution to the vehicle. If the reset doesn’t fix the issue, you’ll need to try the other tips in this article.