1998-2002 Jeep Cherokee Back Up Light & Neutral Safety Switch Guide
Solve common no-start conditions and restore your reverse lights by understanding this critical part.
- This part is both the Back Up Light Switch and the Neutral Safety Switch (NSS) on automatic models.
- Symptoms include no-start, no reverse lights, or only starting in Neutral.
- Cleaning the original switch is a common DIY fix, but replacement offers more reliability.
- Proper adjustment of the new switch after installation is required to ensure it works correctly.
Is it a Back Up Light Switch or a Neutral Safety Switch?
For the 1998-2002 Jeep Cherokee XJ with an automatic transmission, it's both. The Neutral Safety Switch (NSS) is a single unit mounted to the passenger side of the transmission that contains the circuitry for the backup lights and the starter safety interrupt. If you're searching for a 'back up light switch' because your reverse lights are out, you are looking for the NSS. This is a frequent point of confusion. Manual transmission Cherokees have a simpler, separate back up light switch.
Symptoms of a Failing Switch
A bad or dirty NSS can cause some very distinct, and sometimes confusing, problems. 🎬 Watch this video to see these common symptoms in action. Because the switch can get contaminated with dirt, mud, and transmission fluid, its internal electrical contacts fail. Here’s what to look for:
- No Reverse Lights: This is one of the most common symptoms. The internal contacts for the reverse light circuit get dirty and fail to make a connection.
- No-Crank, No-Start: The engine will not turn over when you turn the key. All the lights on the dash may come on, but the starter does nothing. This happens because the switch isn't telling the computer the vehicle is safely in Park or Neutral.
- Starts in Neutral but Not Park: This is a classic sign of a failing or misaligned NSS. The contacts for the Park position are worn or dirty, but the Neutral contacts still work.
- Must Wiggle Shifter to Start: If you have to jiggle the gear selector in Park or Neutral to get the engine to crank, the NSS contacts are making a poor connection.
- Starts in Any Gear: This is a serious safety hazard. If the switch fails completely, it can allow the vehicle to start in Reverse or Drive, causing it to move unexpectedly.
- Check Engine Light: A faulty switch can trigger trouble codes like P0700 (Transmission Control System Malfunction) or P0705 (Transmission Range Sensor Circuit Malfunction).
A Note on Cleaning vs. Replacing
Many Jeep owners successfully restore function by removing, disassembling, and cleaning the original NSS. The internal contacts are cleaned with electrical contact cleaner and a fine brush or sandpaper, then lubricated with dielectric grease. 🎬 See how to clean and restore your original switch for free. While this can be a long-term fix, it can also be temporary, sometimes only lasting a few months. Given the age of these vehicles and the low cost of aftermarket parts, replacement is often a more reliable solution. Removing a seized switch can also be difficult and may result in breaking the old part, making replacement necessary.
Choosing the Right Aftermarket Switch
The original Mopar switch is often considered the highest quality, but can be expensive or hard to find. Aftermarket options offer a cost-effective alternative, but quality can vary. Forum discussions among Jeep owners suggest a general hierarchy.
- Premium Aftermarket (e.g., Standard Ignition): Brands like Standard Motor Products often position themselves as meeting or exceeding OEM specifications and perform 100% testing. They are a solid choice for reliability.
- Jeep Specialist Brands (e.g., Crown, Omix-Ada): These brands are very common in the Jeep world. Owner experiences are mixed. Some find Crown to be a reputable brand and generally better than Omix-Ada. Others have had issues with fit and longevity from both. They are generally considered a step up from generic, no-name parts.
- Value Brands (e.g., Replacement, True Tech, Vemo): These brands offer the lowest price point. While they can function correctly, they may not have the same durability or precise fit as higher-priced options. For a vehicle that sees heavy use or off-roading, investing in a better-known brand may prevent having to do the job twice.
Installation is Key
No matter which brand you choose, proper installation and adjustment are critical. The switch can be rotated slightly on its mount. After installing the new switch, you must test that the vehicle starts in BOTH Park and Neutral, and that the reverse lights come on ONLY in Reverse. If not, you will need to loosen the mounting bolt and slightly rotate the switch until all functions work correctly.
🎬 Follow this easy step-by-step guide to replace your switch.| Part Type | Estimated Cost |
|---|---|
| New Aftermarket | $23 - $88 |
| Shop Labor | $100 - $200 |
Frequently Asked Questions
Is this the same part for a manual transmission?
No. On a 1998-2002 Jeep Cherokee with a manual transmission, the back up light switch is a separate, simpler two-wire switch that screws into the transmission. It does not perform any neutral safety functions.
Where is the Neutral Safety Switch located?
It is mounted on the passenger side of the AW4 automatic transmission, just above the transmission pan and often near the exhaust pipe. Its wiring harness runs up the firewall into the engine bay.
Can I bypass the switch to get my Jeep started?
Yes, it is possible to temporarily bypass the switch by jumping specific pins on the wiring harness connector to get the vehicle started in an emergency. However, this is a temporary fix and is dangerous because it completely disables the safety feature, allowing the vehicle to be started in any gear. It should not be considered a permanent solution.
Are there any recalls for this part?
There are no specific recalls from the NHTSA for the Neutral Safety Switch on the 1998-2002 Jeep Cherokee XJ. Any issues with this part are considered general maintenance or wear-and-tear items.
Helpful Videos
Technical Specifications
OEM Part Numbers: 83503712
Fits the AW4 automatic transmission. Includes integrated wiring harness. Functions as both a neutral safety switch and a reverse light switch.
We Have This Part in Stock
The information in this article is provided for general reference and educational purposes only. Vehicle specifications, procedures, and part compatibility can vary by production date, trim level, and region. Always consult your vehicle's factory service manual and verify part numbers before purchasing or performing repairs. Safety-critical components such as airbags, seat belts, and braking systems should be installed by a qualified professional.
- Jeep Cherokee: