Subaru Legacy Horn Replacement Guide for 1990-2002 Models
Is your Subaru Legacy's horn silent or sounding weak? Here’s how to diagnose the problem and choose the right replacement part.
- Always check the fuse and relay before assuming the horn itself is broken.
- A weak sound usually means one of the two horns has failed, not both.
- If the horn only works when the wheel is turned, the problem is the clock spring, not the horn.
- Aftermarket brands like Standard Ignition offer a reliable and cost-effective alternative to OEM parts.
Symptoms of a Failing Horn
Diagnosing a horn problem on a 1990-2002 Subaru Legacy is usually straightforward. The symptoms point directly to the likely cause. Before you buy a new horn, it's important to check a few things first, as the horn itself isn't always the part that has failed.
Total Silence
If you press the horn and hear nothing at all, the problem could be a blown fuse, a bad relay, a failed clock spring, or the horn units themselves. Start with the easiest fixes first: check the horn fuse in the fuse box. If the fuse is good, you can try swapping the horn relay with an identical one from a less critical system (like the fog lights) to see if that solves the problem.
Weak or 'Wimpy' Sound
Your Legacy likely has two horns—a high-note and a low-note. If your horn suddenly sounds weak, tinny, or just different, it usually means one of the two horn units has failed. This is a very common symptom. You'll need to identify which one is silent and replace it.
Horn Works Intermittently
If the horn works only when you turn the steering wheel to a specific position, the problem is almost certainly a failing clock spring. The clock spring is a coiled wire inside the steering column that allows the steering wheel to turn without breaking the electrical connections for the horn and airbag. While a recall for this part existed for much newer models, the part is a known weak point on many Subarus.
Choosing the Right Aftermarket Horn
For a part like a horn, aftermarket options provide excellent value. The original OEM horns are not known for exceptional quality, and a good aftermarket part can be a reliable replacement. Your choice will depend on your budget and how closely you want to match the original sound.
Brand Tiers for Your Legacy
- Standard Ignition: This is a well-known and respected aftermarket brand that produces quality replacement parts that meet or exceed original specifications. A horn from Standard Ignition is a reliable, direct-fit choice that will restore function and sound close to the original. It's a solid, mid-tier option that balances cost and quality.
- Replacement: This category covers various budget-friendly brands. These horns will get the job done and pass a safety inspection, but the sound might be tinnier or less powerful than the original. If you're on a tight budget and just need a functional horn, this is a viable option, but don't expect a perfect match in tone.
Pro Tip: Some base model Legacys in the 1990s only came with a single horn, even though the wiring for the second horn was often installed at the factory. If you only have one horn, you can often upgrade to the dual-tone setup by simply buying the second horn and plugging it in.
Typical Horn Replacement Costs (1990-2002 Subaru Legacy)
| Option | Estimated Cost |
|---|---|
| New Aftermarket Horns | $36.29 - $77.37 |
| Shop Labor | $50 - $120 |
Cost estimates are for the part itself and do not include professional installation.
Frequently Asked Questions
Where are the horns located on a 1990-2002 Subaru Legacy?
The horns are typically located directly behind the front grille, in front of the radiator. You can usually see them by looking through the grille. Access may require removing a few plastic clips to pull the grille forward.
Is replacing the horn a difficult job?
No, if the horn unit itself has failed, replacement is very easy. It usually involves unplugging a single electrical connector and removing one bolt. You can typically complete the job in under 30 minutes with basic hand tools. However, if the problem is the clock spring, the repair is much more complex and involves removing the steering wheel and airbag, which should be handled by a professional or an experienced DIYer.
My horn only works when I turn the wheel. Do I need a new horn?
No, you likely need a new clock spring, not a new horn. This is a classic symptom of a broken wire inside the clock spring assembly in the steering column. Replacing the horn will not fix this issue.
Do I need to buy a high-note or low-note horn?
If only one of your two horns has failed, you will need to identify which one is broken (high or low) to get a matching tone. You can do this by having a friend press the horn while you stand in front of the car to see which of the two units is not vibrating or making noise. If both are silent or you are replacing both, you can buy a set that includes both high and low tones.
Technical Specifications
OEM Part Numbers: 86510AA010 86520AA010 86510AC030 86520AC030
System uses a dual-horn setup (high and low note). Check for one or two horns behind the grille.
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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