BMW M5 (2000-2004) Horn Replacement Guide
Restore your M5's powerful dual-tone sound with the right new aftermarket horn.
- The M5 uses a dual-tone system; a weak sound usually means one of the two horns has failed.
- Accessing the horns requires removing the front wheel well liners or the front bumper cover.
- It is highly recommended to replace both the high- and low-pitch horns at the same time for a proper sound.
- Check for the critical Takata airbag recall, as it affects 2000-2003 M5 models and is a major safety issue.
Is Your M5 Horn Not Working or Sounding Weak?
A common issue for the E39 M5 is for one of the two horns to fail. This is often caused by age or water getting inside the horn unit, causing it to short out. Instead of the strong, two-tone alert, you're left with a weak, high-pitched squeak or a dull, flat note. In other cases, the horn might not work at all. This could be a simple blown fuse, a bad relay, or a problem with the horns themselves.
CRITICAL SAFETY RECALL: Takata Airbags
Before performing any work on your steering wheel or diagnosing horn issues, be aware that all 2000-2003 BMW M5 models are under an urgent "Do Not Drive" recall for dangerous Takata airbag inflators. These can rupture in a crash, causing serious injury or death. BMW offers free replacement and will even tow your vehicle. Contact a BMW dealer immediately to ensure this free, life-saving repair has been performed on your car.
Choosing the Right Aftermarket Horn
When replacing a horn on your M5, you don't need to pay dealership prices for a Genuine BMW part. Quality aftermarket brands offer reliable performance for a fraction of the cost. Since the system uses two different tones, it's important to order the correct one (high or low pitch) or replace them as a pair for a perfectly matched sound.
Aftermarket Brand Tiers for Your BMW M5
- Good (OEM-Equivalent): Vemo - Vemo is a reputable German aftermarket company that produces a wide range of parts for European vehicles. Their horns are designed to match the specific pitch (420Hz or 510Hz) of the original units and are a popular, reliable choice for restoring the stock sound without the OEM price tag.
- Good (Standard Aftermarket): Standard Ignition - Standard Ignition is a well-known brand in the US market that has been producing reliable ignition and electrical components for decades. Their horns are a solid, dependable option that meets standard quality requirements.
- Economy (Value-Oriented): Replacement - "Replacement" branded parts are a budget-friendly option. They are designed to function correctly and will get your horn working again, but may not offer the same longevity or precise tone-matching as higher-tier brands.
Pro Tip: Replace Horns in Pairs
Even if only one of your horns has failed, it's a good practice to replace both the high- and low-pitch horns at the same time. The other original horn is likely near the end of its service life as well. Replacing them as a set ensures a proper, strong tone and saves you from having to do the job twice.
E39 M5 Horn Replacement Cost
The cost to replace a horn can vary depending on whether you do it yourself and which parts you choose. The horns themselves are affordable, but accessing them requires some labor.
| Part Type | Estimated Cost |
|---|---|
| New Aftermarket Horns (Pair) | $72 - $155 |
| New OEM Horns (Pair) | $130 - $160 |
| Shop Labor | $180 - $270 |
| Total Professional Replacement (Aftermarket) | $252 - $425 |
Frequently Asked Questions
Where are the horns located on a 2000-2004 M5?
The E39 M5 has two horns located behind the front bumper cover, one on the driver's side and one on the passenger's side. They are typically mounted in the front wheel wells, forward of the tire.
My horn doesn't work at all. Is it the fuse?
It could be. Before ordering parts, check the horn fuse. A blown fuse, a bad relay, or a wiring issue can cause a total failure. If the fuse and relay are good, the next step is to test the horns themselves. Often, both horns fail around the same time due to age or water damage.
How difficult is it to replace the horns myself?
This is a manageable DIY job for those comfortable with basic tools. Accessing the horns typically involves removing the front wheels and the front section of the plastic wheel well liners. Some owners prefer to remove the entire front bumper cover for easier access. The job takes approximately 1.5 to 2 hours.
Do I need to order a high-pitch or low-pitch horn?
Your M5 uses one of each. The low-pitch horn is 420 Hz, and the high-pitch is 510 Hz. If you are only replacing one, you must identify which one has failed and order the correct replacement. However, it is highly recommended to replace both at the same time to ensure a correct, full sound.
Technical Specifications
OEM Part Numbers: 61338362359 61338362360 61338381271
System Type: Dual-tone High Pitch Frequency: 510 Hz Low Pitch Frequency: 420 Hz
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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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