2021 Subaru Forester 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 | WAZSKE13D02 |
| OEM Fob PN | 88821SJ000 |
| Aftermarket Options | Look for compatibility with FCC ID WAZSKE13D02 |
| Battery Type | CR2032 |
| Programmable On-Board? | No |
| Cuts Required? | Yes (for the mechanical key blade) |
Step-by-step on-board programming
Unfortunately, the 2021 Subaru Forester does not support DIY, on-board programming for its key fobs. The vehicle's advanced security system requires specialized diagnostic equipment to link new key fobs to the car's computer. This means you will need to visit a Subaru dealership or consult a qualified automotive locksmith.
Battery replacement
- Locate the small release button or switch on the side of the key fob. Press it to release the emergency key blade, then pull the blade out.
- With the key blade removed, you'll see a small slot or indentation. Use a flathead screwdriver or coin to carefully pry open the two halves of the key fob casing.
- Gently separate the two halves. You will see the circuit board and the battery.
- Note the orientation of the old battery (CR2032). Carefully remove it.
- Insert the new CR2032 battery, ensuring the positive (+) side is facing up (this is usually the side with text on it).
- Align the two halves of the key fob casing and press them firmly together until they click into place.
- Reinsert the emergency key blade.
Where to buy a replacement fob
- Subaru Dealership: This is often the most expensive option, but it guarantees that you get a genuine OEM part that is fully compatible with your vehicle. They will also handle the programming for you. Expect to pay anywhere from $250 to $400 or more for the fob and programming.
- Automotive Locksmith: A qualified automotive locksmith can provide and program a new key fob, often at a significantly lower cost than a dealership. Locksmiths have the necessary diagnostic tools and expertise. Prices typically range from $150 to $300, depending on the locksmith and your location.
- Online Retailers (e.g., Amazon, eBay): You can often find aftermarket or even OEM key fobs for sale online at a lower price (sometimes $30-$80 for the fob alone). However, be very careful to verify the FCC ID (WAZSKE13D02) and part number (88821SJ000) match your original. You'll still need to factor in the cost of programming by a locksmith or dealer, as DIY programming isn't possible.
If on-board programming isn't supported
Since on-board programming is not an option for your 2021 Subaru Forester, you will have to rely on professional services. Both new key fobs and replacement key fobs need to be programmed to the car's immobilizer system. The 2021 Forester uses an advanced immobilizer system that requires a diagnostic scan tool to add or remove keys. This ensures the security of your vehicle.
When budgeting, remember that the cost will include both the price of the key fob itself and the labor for programming. If you purchase a fob online, you'll still need to pay a locksmith or dealer for their programming service, which can be an additional $80-$150. It's often more convenient and sometimes more cost-effective in the long run to have a professional supply and program the fob for you in one go.
Find a mobile locksmith or shop on Repairius.
More specs for the 2021 Subaru Forester
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
2021 Subaru Forester 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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