2021 Subaru Crosstrek 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 | WAZSKE13D01 |
| OEM Fob PN | 88821FL000, 88821FL00A |
| Aftermarket Options | Look for compatibility with FCC ID WAZSKE13D01 |
| Battery Type | CR2032 |
| Programmable On-Board? | No, dealer/locksmith only |
| Cuts Required? | Yes, for integrated key blade |
Step-by-step on-board programming
Unfortunately, the 2021 Subaru Crosstrek does not support DIY on-board key fob programming. This means you cannot program a new key fob yourself using a series of button presses or key turns in the ignition. Modern Subaru vehicles, including your 2021 Crosstrek, require specialized diagnostic equipment to program new key fobs and their integrated transponder chips. This process typically involves connecting a scan tool to the vehicle's OBD-II port to sync the new fob with the car's immobilizer system.
Battery replacement
Replacing the CR2032 battery in your 2021 Subaru Crosstrek key fob is a straightforward process:
- Locate the small release button or switch on the side or back of the key fob. Press or slide it to release the emergency key blade.
- With the emergency key removed, you should see a small slot or notch. Use a small flathead screwdriver or a coin to gently pry open the two halves of the fob.
- Carefully separate the two halves, exposing the circuit board and battery.
- Note the orientation of the CR2032 battery (usually positive side up). Gently remove the old battery.
- Insert the new CR2032 battery, ensuring it's correctly oriented.
- Align the two halves of the key fob and snap them back together until they are securely closed.
- Reinsert the emergency key blade.
Where to buy a replacement fob
When considering a replacement key fob for your 2021 Subaru Crosstrek, you have several options, each with its pros and cons:
-
Subaru Dealership:
- Pros: Guaranteed genuine OEM part, expert programming, and often includes key cutting. Warranty on parts and labor.
- Cons: Most expensive option. Expect to pay $300 - $500+ for the fob, cutting, and programming.
-
Automotive Locksmith:
- Pros: Often more affordable than the dealership, especially for programming. Can typically cut the key blade and program the transponder chip on-site. Many mobile locksmiths can come to you.
- Cons: Quality of aftermarket fobs can vary. Ensure the locksmith uses high-quality parts that match the FCC ID. Prices generally range from $200 - $400.
-
Online Retailers (e.g., Amazon, eBay):
- Pros: Cheapest option for the fob itself. You can find OEM or compatible aftermarket fobs for $50 - $150.
- Cons: You still need to pay for cutting and programming separately, which can negate some of the savings. There
More specs for the 2021 Subaru Crosstrek
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 Crosstrek 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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