Dodge Magnum 2005-2008 Brake Light Switch: An Owner's Guide
Fix common electrical problems like failing brake lights and cruise control by understanding and replacing your brake light switch.
- A faulty brake light switch is a common cause for multiple electrical issues on the 2005-2008 Magnum, including no brake lights, being stuck in Park, and cruise control failure.
- The issue is often accompanied by the P0571 diagnostic trouble code.
- Replacement is simple, inexpensive, and a common DIY task that can be completed in under 30 minutes.
- A quality aftermarket switch from a brand like Standard Ignition is a reliable and cost-effective alternative to an OEM part.
Understanding the Brake Light Switch in Your Magnum
The brake light switch in the 2005-2008 Dodge Magnum is a known weak point that can cause a surprising number of issues. It's a simple plunger-style switch that gets activated every time you press the brake pedal. Due to its constant use and plastic construction, it can wear out, get stuck, or lose its proper adjustment over time. When it fails, it can send incorrect signals—or no signal at all—to your car's main computer, leading to a variety of seemingly unrelated electrical problems.
Is an OEM or Aftermarket Switch Better?
For a part like the brake light switch, a quality aftermarket component often provides the same level of performance as an original equipment (OEM) part for a lower price. The original switches have a known failure rate, so an aftermarket replacement from a reputable brand is a solid choice. Brands like Standard Ignition (Standard Motor Products) are well-regarded and widely available, often with positive owner reviews for fit and function. Other brands like Crown Automotive and Rostra are also common replacements. The key is to choose a quality part, as a cheap, poorly made switch can fail quickly or require constant adjustment.
Brake Light Switch Replacement Cost for 2005-2008 Dodge Magnum
| Part Type | Average Cost |
|---|---|
| New Aftermarket Part | $21 - $43 |
| Shop Labor | $70 - $140 |
Pro Tip: Replacing the brake light switch is a simple DIY job that most owners can do in under 30 minutes with basic hand tools, saving on labor costs. The switch is located above the brake pedal and is removed by twisting it counter-clockwise.
Known Issues and Recalls
While there are no major recalls specifically for the brake light switch on the 2005-2008 Dodge Magnum, its failure is a very common complaint among owners of LX-platform vehicles (which includes the Magnum, Charger, and Chrysler 300). The most frequently reported issue is the diagnostic trouble code P0571 (Brake Switch 'A' Circuit Malfunction), which directly points to a problem with this switch or its wiring. In some cases, owners find that a replacement switch needs careful adjustment to work correctly with both the brake lights and the shift interlock.
Frequently Asked Questions
Why won't my Magnum shift out of Park?
The brake light switch is part of the shift interlock system. It sends a signal that you are pressing the brake, which is required to move the shifter out of Park. If the switch is bad, the signal is never sent, and your shifter will be stuck.
Why did my stability control (ESP/BAS) light turn on?
A faulty brake light switch can send erratic signals to the car's computer. The stability control system relies on the brake signal to function correctly. When it receives a confusing signal, it may disable the system and turn on the warning light as a precaution.
Is it hard to replace the brake light switch myself?
No, this is considered an easy DIY repair. The switch is located under the dashboard, just above the brake pedal arm. You typically just need to disconnect the wiring harness and twist the switch to remove it. The new one installs in the reverse order.
My brake lights work, but my cruise control doesn't. Could it still be the switch?
Yes. The brake light switch has multiple contacts inside for different systems. It's possible for the part of the switch that controls the brake lights to work while the part that communicates with the cruise control system has failed.
Technical Specifications
OEM Part Numbers: 4671336AD
Typically a 6-terminal, blade-style, push-on connector switch.
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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