2019 Kenworth W900 Key Fob Programming Guide
AI-generated reference. Always verify torque values, fluid capacities, intervals, and procedures against the manufacturer's service manual or OEM repair information before performing work. Repairius is not liable for damage from acting on this content without verification.
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Quick reference
| Item | Detail |
|---|---|
| FCC ID | KOBJ04A |
| OEM Fob PN | 2043622EX, A26-20436-22 |
| Aftermarket Options | Keyless entry remote control, key fob transmitter |
| Battery Type | CR2032 |
| Programmable On-Board? | No |
| Cuts Required? | N/A |
Step-by-step on-board programming
Unfortunately, the 2019 Kenworth W900 does not have a user-accessible, on-board (DIY) programming procedure for new key fobs. Adding a new or replacement remote requires specialized diagnostic equipment to interface with the truck's computer system. This is a security measure to prevent unauthorized access to the vehicle.
You will need to have a professional automotive locksmith or a Kenworth dealership program the new remote for you.
Battery replacement
Replacing the battery in your Kenworth fob is a straightforward process you can do yourself in a few minutes.
- Open the case: Look for a small notch or seam on the side of the fob. Use a small, flat-head screwdriver or a coin to gently pry the two halves of the fob apart.
- Remove the old battery: Note the orientation of the existing CR2032 battery. The positive (+) side is usually facing up.
- Insert the new battery: Slide the new CR2032 battery into place, ensuring it's in the same orientation as the one you removed.
- Snap it shut: Align the two halves of the fob case and press them firmly together until they click shut.
Where to buy a replacement fob
- Kenworth Dealership: This is the most expensive option, but you are guaranteed to get a genuine OEM fob that is correct for your truck. Expect to pay a premium for both the fob itself and the programming labor. The total cost can range from $150 to $300+.
- Automotive Locksmith: A qualified automotive locksmith can often source the same OEM or high-quality aftermarket fobs for a lower cost than the dealer. They have the necessary scan tools to program the fob to your truck, and many are mobile, meaning they can come to you. This is often the most convenient and cost-effective option, with prices typically ranging from $100 to $250, including programming.
- Online (Amazon, eBay, etc.): You can find many replacement fobs online at a significantly lower price. However, be cautious. You must ensure the FCC ID (KOBJ04A) matches your original remote exactly. There is also a risk of receiving a low-quality, used, or incorrectly advertised remote that cannot be programmed. Remember, even if you buy the fob online, you will still need to pay a locksmith or dealer to program it.
If on-board programming isn't supported
As mentioned, the 2019 W900 requires a professional with a diagnostic scan tool to program new fobs. This tool securely communicates with the truck's Body Control Module (BCM) or equivalent computer system to register the unique ID of the new remote. This process ensures that only authorized fobs can operate the vehicle's locks.
There is no separate immobilizer transponder in the key fob itself for this model year; the security for remote functions is handled entirely through the fob's rolling code system, which is programmed by the scan tool. The cost for this programming service alone typically ranges from $60 to $120, in addition to the cost of the fob.
Find a mobile locksmith or shop on Repairius.
More specs for the 2019 Kenworth W900
Oil Capacity & Filter
Capacity, weight, filter PN, drain plug torque, change interval.
Fluid Type Specs
Engine oil, coolant, ATF, diff, brake, PS, DEF — with OEM spec numbers.
Coolant Capacity & Type
Total system capacity, OEM coolant spec, flush interval, bleed tips.
Transmission Fluid & Service
Trans model, fluid spec, capacity, filter PN, service interval.
Torque Specifications
Lug nuts, drain plug, caliper, axle nut, plug, key fasteners.
Brake Pad & Rotor Specs
Pad PNs, rotor size, min thickness, caliper torque.
Tire Size & Pressure
OEM size, cold psi, bolt pattern, wheel size, TPMS.
Battery Size & Group
Group size, CCA, AGM/flooded, dimensions, reset note.
A/C Refrigerant & Oil
R-134a or R-1234yf, charge oz, PAG oil spec.
Bulb Sizes (Headlight, Tail, Fog)
Headlight, fog, tail, turn, reverse, interior.
Factory Maintenance Schedule
Service intervals by mileage, severe-duty notes, known issues.
Towing Capacity & Payload
Max tow, payload, GVWR/GCWR, hitch class by trim.
Fuse Box Diagram & Amperage
Fuse box locations, layout, amps, and what each fuse controls.
Serpentine Belt Routing & Length
Belt routing, length, rib count, OEM + aftermarket PNs.
Wheel Alignment Specifications
Camber, caster, toe ranges (front & rear), adjustability notes.
Paint Color Codes
All factory colors with paint codes, sticker location, touch-up tips.
Wiper Blade Sizes
Driver/passenger/rear blade size, attachment, OEM + cross-refs.
Spark Plug Type & Gap
Plug PN, gap, torque, interval by engine.
Transmission & Axle Gear Ratios
Trans gear ratios, axle ratios, RPO codes, tow vs MPG impact.
Same spec — other model years
Maintenance & repair guides
2019 Kenworth W900 Maintenance Schedule →
Available maintenance guidance; confirm the manufacturer schedule.
Repair planning references →
Plan the scope of work; detailed procedures need configuration-matched evidence.
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