Passive entry is one of the great features of the Jeep Grand Cherokee or Renegade. When you see the message “Service Passive Entry System” on the dash it indicates that system fail to recognize the key fob when it is in close proximity to the vehicle
It happens due to issues like damaged key FOB, faulty antenna, and more. No worries, they can be fixed easily. And, we will guide you on how to deal with this issue in your jeep. Keep reading!
What Is Passive Entry on Jeep?
In simple language, a passive entry system is a feature that allows the driver to start the vehicle without using a physical key.
When the user comes close to the car, the passive keyless entry (PKE) automobile security system activates automatically.
This function, often referred to as Keyless Enter-N-Go, allows drivers to enter and start their Jeep without having to depress the RKE transmitter locking buttons.
The passive Entry system is a Keyless Enter-N-Go innovation that improves the car’s Remote Keyless Entry (RKE) system.
This technology adds convenience to the process of entering and starting your Jeep, making it easier and more efficient.
What Causes the Service Passive Entry on Jeep?
The passive entry system on Jeep is quite reliable; however, it may run into issues which can lead to service passive entry messages appearing on the dash. Here are some common reasons.
- Dead key FOB battery
- Damaged antenna
- Wiring issues in the system
- Malfunctioning key FOB
- Obstructions in the sensor
How to Fix the Service Passive Entry on Jeep?
If you’re experiencing an issue with the Passive Entry System on your Jeep, try to find the exact reason and fix it.
Any issues with the passive entry system can be highly annoying since it allows you to unlock and start the car without a key.
Check and Replace the Battery in the Key Fob
All Key Fobs work with batteries; over time, you will need to change this battery.
So, when the Key Fob starts to malfunction, it can be due to a damaged battery which can also cause issues with the entry system.
So before checking anything else, check the key Fob for dead or low batteries, as this can prevent the Key Fob from communicating with the vehicle’s passive entry system.
Open your key Fob, and look for the point where two halves are joined; push open the two parts using a simple screwdriver. You will see a battery inside of it; change the battery with a new one.
Make sure to get the same exact battery, and don’t worry; these batteries are quite cheap and easily available.
Check the Antenna for Damage
The Passive Entry System(PES) on a Jeep relies on an antenna to pick up the signal from the key Fob and communicate with the vehicle’s system.
If the antenna is damaged or faulty, it fails to pick up the signal from the key Fob, and this can cause the service light to come on.
Poor or inconsistent PES system performance, the Jeep not responding to the key Fob, or a low signal from the key Fob are some indications that an antenna is broken or malfunctioning.
If you have a suspicion that the antenna is the source of the problem, you should check it for any damage indicators, such as breaks, rust, or short circuits. Change the antenna with a new one if you discover any damage or problems.
Replacing the antenna by yourself will be a complicated process as it requires some specialized tools. So, you should consult an expert for the replacement.
Wiring Issues in the System
The service light may turn on if there is a break or problem in the wiring that prevents the key Fob from interacting with the vehicle’s passive entry system.
To examine the wiring, look for any indications of deterioration, such as scrapes, breaks, or rust on the wire harness and connectors. You should fix or replace the wiring as necessary if you discover any problems.
When checking the wiring, it’s a good idea to use a multimeter to test for continuity and ensure that the wiring is properly connected.
Also, check for any damaged wirings in the antenna module itself, as this can also cause issues with the passive entry system on your Jeep.
Replace the Key FOB
If the battery is not the issue and you have checked the wiring and antenna for damage or faults, then replacing the key Fob may be the next step in resolving the Service Passive Entry issue on your Jeep.
Key Fobs can get damaged for many reasons, like wear and tear over time, water damage, etc.
So when the Key fobs get damaged, they may not be able to communicate with the vehicle’s Passive Entry System, and this can cause the service light to come on.
And if this is the case for you, then you will need to replace the Key Fob. Replacement key fobs can be purchased from your local Jeep dealership or online retailer.
When purchasing a replacement key fob, it’s important to ensure that it is compatible with your Jeep’s specific make and model.
Reprogram the Key Fob
Sometimes, the key Fob might be in perfect work condition; all it needs is reprogramming. Reprogramming can help you save a lot of money that would otherwise be needed for a replacement.
Jeep key Fob programming is a bit of a difficult process, and it differs from model to model. So, see your owner’s handbook or a Jeep shop for instructions.
Clean or Replace the Sensor
Check to see if anything obstructs the car receiver or the sensor on the door handle that interacts with the Key Fob. If there are any obstructions, then proper connections can not be made.
So, you should carefully clean all the components, including the sensor, to remove any obstructions.
Moreover, a faulty sensor or controller might cause the security system to fail. So, if this is the case, both the sensor and the controller must be replaced.
Now replacing a faulty sensor by yourself is not going to be easy, and hence you will need to consult a professional mechanic for the work.
Tips to Avoid Passive Entry Service Light on Jeep
Prevention is always better than cure. Following these tips will help you avoid passive entry issues on the Jeep.
- Follow the service schedule by your manufacturer and do the regular maintenance of your Jeep
- A low or empty battery in the key Fob might prevent it from connecting with the system, so always keep it charged.
- Regularly inspect the antenna and wiring for any damages over time due to exposure to the elements or wear and tear.
- Avoid exposing the key Fob to extreme temperatures, as it can affect its performance.
When the passive entry service light comes on, you need to fix it asap. Do keep in mind fixing the issues by yourself can be a tough task.
Hence it is better to visit a dealership or hire a professional mechanic for the work. Sometimes simply replacing the keyfob battery fixes the issue and this can be done by yourself.