2010-2019 Jaguar XJ Heated & Cooled Seat Module: Diagnosis and Replacement Guide
A complete guide to diagnosing and replacing the climate seat module in your 2010-2019 Jaguar XJ, including how to tell if the module is truly the problem.
- The definitive test for a bad module is to swap it with the one from the other front seat; if the problem moves, the module is bad.
- This specific Climate Seat Module (AW93-14B663-AD) is plug-and-play and does NOT require dealer programming.
- If swapping the module doesn't fix the problem, the issue is a broken heating element inside the seat, a much more expensive repair.
- The module is located under the carpet beneath each front seat and requires unbolting the seat to access.
Symptoms of a Failing Climate Seat Module
When a climate seat module fails in a 2010-2019 Jaguar XJ, the symptoms are usually straightforward. Because this module only handles heating and cooling, a failure will not affect the power seat adjustments or memory functions.
- Heating or Cooling Inoperative: The most common symptom is that either the heating or cooling function for one seat stops working entirely. The lights on the touchscreen may illuminate as normal, but the seat temperature does not change.
- One Function Fails, The Other Works: It's common for just the heat to fail while the cooling still operates, or vice-versa. This points to a specific circuit failure within the module or the seat itself.
- Intermittent Operation: The function may work for a few seconds and then shut off. This can indicate the module is overheating or detecting a fault and cutting power.
- Problem is on One Side Only: Typically, a module failure will only affect the driver's or passenger's seat, not both at the same time.
Pro Tip: The most common cause of a non-working heated seat is often a broken heating element wire inside the seat cushion, not a failed module. The diagnostic steps below are essential to avoid buying a module you don't need.
Step-by-Step Diagnosis
Before spending any money, follow these steps to accurately pinpoint the problem.
- Check the Fuses: The first step is to check the fuses for the seat systems. Consult your owner's manual for the specific fuse locations in the rear fuse box (located in the trunk). Forum users often point to fuses F17 and R2 as relevant.
- The Module Swap Test (The Definitive Test): Since the driver and passenger side modules are identical and interchangeable, the best way to confirm a bad module is to swap them. If the problem moves from the driver's seat to the passenger's seat, you have 100% confirmed the module is the faulty component. If the problem stays with the original seat, the issue is likely the heating/cooling element within the seat itself.
How to Access and Swap the Modules
The modules are located under the carpet beneath each front seat. Accessing them requires a few simple tools and about 30-45 minutes.
- Disconnect the vehicle's battery to prevent any electrical issues.
- Slide the seat fully forward to access the two rear floor bolts. Remove them using a socket wrench.
- Slide the seat fully backward to access the two front floor bolts and remove them.
- Tilt the entire seat assembly backward to gain access to the floor underneath. You do not need to remove the seat from the car.
- You will see the wiring harness leading to a cutout flap in the carpet. Lift this flap to expose the Climate Seat Module.
- Disconnect the electrical connectors, remove the module, and swap it with the one from the other seat.
- Temporarily reconnect the battery and test the seat functions.
Buying a Used Climate Seat Module
Buying a used OEM module is a smart and cost-effective repair. New modules from a Jaguar dealer are extremely expensive, and reliable aftermarket options are not available.
- Confirm the Diagnosis First: Do not buy a module until you have performed the swap test described above. Replacing the heating element inside the seat is a much more expensive and difficult job.
- Match the Part Number: The correct part number for this module is typically AW93-14B663-AD or a similar predecessor like AW93-14B663-AC. The part number FW93-455A26-BD, sometimes associated with these vehicles, is incorrect for this specific module. Always match the part number on your original module to ensure compatibility.
- Inspect for Corrosion: When buying online, carefully inspect the photos of the electrical connector pins. Do not buy any module that shows signs of water damage, rust, or green/white corrosion.
- No Programming Required: This specific module for heating and cooling is plug-and-play. It is not tied to the vehicle's VIN and does not require programming by a dealer, making a used part an ideal solution. Do not confuse it with the seat *movement* control module, which *does* require programming.
Warning: Be very clear about which module you are buying. The Climate Seat Module (this part) is plug-and-play. The Seat Control Module (for movement/memory) is not and requires expensive dealer programming.
Cost Comparison
Replacing the Climate Seat Module yourself with a used part is one of the most cost-effective repairs you can perform on a modern Jaguar.
| Part/Service | Estimated Cost |
|---|---|
| New OEM Module (Dealer) | $1,300 - $1,450 (part only) |
| Used OEM Module | $40 - $75 |
| Shop Labor Cost | $200 - $400 |
| DIY Cost (with Used Part) | $40 - $75 |
Frequently Asked Questions (FAQ)
Does the 2010-2019 Jaguar XJ Climate Seat Module need to be programmed?
No. The module that controls heating and cooling (part number AW93-14B663-AD) is not VIN-coded and does not require any programming. It is a simple plug-and-play replacement. However, the separate module that controls seat movement and memory functions does require programming.
Are the driver and passenger side modules the same?
Yes, for the 2010-2019 Jaguar XJ, the front climate seat modules are identical and can be swapped from one side to the other for diagnostic purposes.
I replaced the module, but my heated seat still doesn't work. What's wrong?
If a known-good module (or swapping the modules side-to-side) does not fix the issue, the problem is almost certainly a break in the heating element grid inside the seat cushion or backrest. This is a common failure point and requires removing the seat's upholstery to repair or replace the element, which is a significantly more involved and expensive job.
Where is the heated seat module located on a Jaguar XJ?
It is located under the carpet, directly beneath the front portion of each front seat. You must unbolt the seat and tilt it back to lift the carpet and access the module.
Technical Specifications
OEM Part Numbers: AW93-14B663-AD AW93-14B663-AC C2D26815 LR031471
Controls both heating and cooling functions. Interchangeable between driver and passenger sides. Does not require programming.
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.
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