BMW P0571 Code:Brake Light Switch Plausibility
As a car owner, it’s important to be aware of any warning signs or fault codes that may appear on your vehicle’s dashboard. One such code that BMW drivers may encounter is the P0571 code, which is related to the brake light switch circuit. While it may seem like a minor issue, ignoring this code can have serious consequences. In this article, we’ll explore the meaning, causes, symptoms, and fixes for the BMW P0571 code, so you can stay informed and keep your vehicle running smoothly.
Understanding BMW P0571 Code
The BMW P0571 code is a fault code that indicates a problem with the brake light switch circuit. This code is triggered when the brake pedal switch is not functioning properly, or when there is a discrepancy between the switch’s signal and the vehicle’s computer. The brake light switch is an essential component of the vehicle’s braking system, as it signals the brake lights to turn on when the brake pedal is pressed. When this switch fails, it can cause a range of issues, including the inability to shift out of park, the inability to start the vehicle, and even a complete loss of braking power. It is important to address this issue promptly to ensure the safety of the driver and passengers.
Signs and Symptoms of BMW P0571 Code
The P0571 code in BMW vehicles is related to the brake light switch circuit. When this code appears, it indicates that there is a problem with the plausibility of the brake light switch signal. Here are some of the signs and symptoms that may indicate the presence of this code:
- Brake lights not working: One of the most obvious signs of the P0571 code is that the brake lights may not work properly. This can be dangerous as it can lead to accidents, especially when driving at night.
- Brake pedal feels soft: Another symptom of this code is that the brake pedal may feel soft or spongy. This can make it difficult to stop the vehicle quickly, which can also be dangerous.
- Check Engine Light: The check engine light may come on when this code appears. This is because the brake light switch is an important component of the vehicle’s safety system, and any issues with it can affect the overall performance of the vehicle.
- Cruise control not working: In some cases, the P0571 code may also cause the cruise control to stop working. This can be frustrating for drivers who rely on this feature for long drives.
- Transmission not shifting: In rare cases, the P0571 code may also cause the transmission to not shift properly. This can be a serious issue that requires immediate attention.
If you notice any of these symptoms, it is important to get your vehicle checked by a professional mechanic as soon as possible. Ignoring the P0571 code can lead to serious safety issues and costly repairs down the line.Possible Causes of BMW P0571 Code
The P0571 fault code in BMW vehicles is related to the brake pedal switch circuit. This code indicates that there is a problem with the plausibility of the brake light switch signal. The brake light switch is an important component of the brake system, as it sends a signal to the vehicle’s computer when the brake pedal is pressed. This signal is used to activate the brake lights and to disengage the cruise control system. When the P0571 code appears, it means that there is an issue with the brake light switch circuit. Here are some of the possible causes of this code:
1. Faulty Brake Light Switch: The most common cause of the P0571 code is a faulty brake light switch. Over time, the switch can wear out or become damaged, which can cause it to malfunction. A faulty switch can send incorrect signals to the vehicle’s computer, which can trigger the P0571 code.
2. Wiring Issues: Another possible cause of the P0571 code is wiring issues. If there is a problem with the wiring that connects the brake light switch to the vehicle’s computer, it can cause the switch to malfunction. This can result in the P0571 code appearing.
3. Failed Brake Light Bulbs: In some cases, the P0571 code can be caused by failed brake light bulbs. If one or more of the brake light bulbs are not working, it can cause the brake light switch to malfunction. This can trigger the P0571 code.
4. Failed Brake Light Relay: The brake light relay is responsible for sending power to the brake lights. If the relay fails, it can cause the brake lights to stop working, which can trigger the P0571 code.
5. Failed Brake Light Control Module: The brake light control module is responsible for controlling the brake lights. If the module fails, it can cause the brake lights to stop working, which can trigger the P0571 code.
In conclusion, the P0571 code in BMW vehicles is related to the brake pedal switch circuit. The possible causes of this code include a faulty brake light switch, wiring issues, failed brake light bulbs, failed brake light relay, and failed brake light control module. It is important to address this issue promptly, as ignoring it can lead to safety concerns and potentially costly repairs.
Fixes for BMW P0571 Code
The P0571 code in BMW vehicles is related to the brake pedal switch circuit. If you are experiencing this issue, it is important to address it promptly to avoid potential safety hazards. Here are some possible fixes for the P0571 code:
- Replace the brake light switch: The most common fix for the P0571 code is to replace the brake light switch. This switch is responsible for turning on the brake lights when the pedal is pressed, and if it is not functioning properly, it can trigger the P0571 code. A new switch can be purchased from a BMW dealership or auto parts store and installed relatively easily.
- Check the wiring and connections: If replacing the brake light switch does not solve the issue, the wiring and connections should be checked for any damage or corrosion. A damaged wire or connection can cause the circuit to malfunction and trigger the P0571 code.
- Replace the brake pedal assembly: In rare cases, the brake pedal assembly itself may be faulty and need to be replaced. This is a more involved repair and should only be attempted by a qualified mechanic.
- Reset the code: Once the issue has been fixed, the P0571 code should be reset using a diagnostic tool. This will clear the code from the vehicle’s memory and ensure that the issue has been resolved.
Ignoring the P0571 code can lead to potential safety hazards, as the brake lights may not function properly. Additionally, if the issue is not addressed promptly, it can cause further damage to the vehicle’s electrical system. If you are unsure how to fix the P0571 code, it is recommended to take your BMW to a qualified mechanic for diagnosis and repair.
How Much Will It Take to Fix BMW P0571 Code?
The cost of fixing the BMW P0571 code will depend on the root cause of the issue. If the problem is simply a faulty brake light switch, the cost of replacement can range from $20 to $50. However, if the issue is more complex and requires additional repairs, the cost can increase significantly.
It is important to note that ignoring the P0571 code can lead to more severe issues with your vehicle’s braking system. This can result in costly repairs and even put your safety at risk. Therefore, it is recommended to address the issue as soon as possible.
If your BMW is still under warranty, the cost of repairs may be covered. However, it is best to check with your dealership or mechanic to confirm. In any case, it is always better to address the issue promptly to avoid further damage and expenses.
In conclusion, the cost of fixing the BMW P0571 code can vary depending on the root cause of the issue. It is important to address the issue promptly to avoid further damage and expenses.
Possible Causes and Fixes of Code
| Possible Cause | Fix | Cost to Fix |
|---|---|---|
| Defective brake light switch | Replace brake light switch | $50-$150 |
| Wiring issues in brake light switch circuit | Repair or replace wiring | $100-$300 |
| Malfunctioning brake pedal position sensor | Replace brake pedal position sensor | $100-$250 |
| Failed brake control module | Replace brake control module | $500-$1000 |
Preventing BMW P0571 Code: Tips and Tricks
If you own a BMW vehicle, it’s important to take care of it properly to avoid any issues that may arise. One of the most common problems that BMW owners face is the P0571 fault code, which is related to the brake pedal switch circuit. Here are some preventive measures that you can take to avoid this code from appearing:
1. Regular Maintenance
Regular maintenance is key to preventing any issues with your BMW vehicle. Make sure to follow the manufacturer’s recommended maintenance schedule, which includes regular oil changes, tire rotations, and brake inspections. This will help you catch any potential issues before they become bigger problems.
2. Check Brake Light Switch
The brake light switch is a crucial component of your BMW’s braking system. It’s responsible for turning on the brake lights when you press the brake pedal. If the switch is faulty, it can cause the P0571 code to appear. Make sure to check the switch regularly and replace it if necessary.
3. Use High-Quality Parts
Using high-quality parts is essential to keeping your BMW running smoothly. Cheap, low-quality parts can cause issues with your vehicle, including the P0571 code. Make sure to use OEM (original equipment manufacturer) parts or high-quality aftermarket parts when replacing any components in your BMW.
4. Avoid Hard Braking
Hard braking can put a lot of stress on your BMW’s braking system, including the brake light switch. Avoid slamming on the brakes whenever possible and try to brake gradually instead. This will help prevent any issues with the switch and other components in your braking system.
5. Address Any Issues Promptly
If you notice any issues with your BMW’s braking system, such as a spongy brake pedal or a brake warning light on your dashboard, address them promptly. Ignoring these issues can lead to bigger problems down the road, including the P0571 code.
In conclusion, preventing the P0571 code in your BMW vehicle requires regular maintenance, checking the brake light switch, using high-quality parts, avoiding hard braking, and addressing any issues promptly. By following these preventive measures, you can keep your BMW running smoothly and avoid any costly repairs in the future.
How Serious is the BMW P0571 Code?
The BMW P0571 code is a serious issue that should not be ignored. This code indicates a problem with the brake light switch circuit, which can affect the functionality of the brake lights and potentially lead to safety hazards on the road. When this code appears, it means that the brake light switch is not functioning properly, and the vehicle’s computer system is unable to detect when the brake pedal is being pressed.
Ignoring the BMW P0571 code can lead to serious consequences, such as accidents or collisions. When the brake lights are not functioning properly, other drivers on the road may not be able to tell when the vehicle is slowing down or stopping, which can lead to rear-end collisions. Additionally, this code can cause the vehicle to fail state inspections, which can result in fines or penalties.
If you notice the BMW P0571 code appearing on your vehicle, it is important to have it diagnosed and repaired as soon as possible. This will ensure that your brake lights are functioning properly and that you are able to drive safely on the road.
Can You Still Drive with the BMW P0571 Code?
If you have a BMW vehicle and the P0571 code has appeared, you may be wondering if it is safe to continue driving your car. The answer is that it depends on the severity of the issue.
The P0571 code is related to the brake pedal switch circuit, which means that it can affect the functionality of your brake lights. If your brake lights are not working properly, it can be dangerous to drive, as other drivers may not be able to tell when you are braking.
However, if your brake lights are still functioning normally, you may be able to continue driving your car for a short period of time. However, it is important to get the issue diagnosed and fixed as soon as possible to avoid any potential safety hazards.
Ignoring the P0571 code can also lead to other issues, such as decreased fuel efficiency and potential damage to other components of your vehicle. It is always best to address any fault codes as soon as they appear to ensure the safety and longevity of your car.
Conclusion
If you own a BMW and have encountered the P0571 fault code, it is important not to ignore it. This code is related to the brake pedal switch circuit and can have serious consequences if left untreated. The causes of this code can vary, but it is important to diagnose and fix the issue as soon as possible to avoid potential safety hazards. If you are unsure how to fix the issue, it is recommended to take your vehicle to a certified BMW mechanic. Don’t let this issue go unresolved, take action and ensure the safety of yourself and others on the road.
FAQ
What is the BMW P0571 code?
The BMW P0571 code is a fault code related to the brake pedal switch circuit. It indicates that there is a problem with the plausibility of the brake light switch signal.
What are the symptoms of the BMW P0571 code?
The symptoms of the BMW P0571 code may include the brake lights staying on or not working at all, the cruise control not working, and the transmission not shifting out of park.
What causes the BMW P0571 code?
The BMW P0571 code can be caused by a faulty brake light switch, a damaged wiring harness, or a problem with the brake pedal position sensor.
How is the BMW P0571 code diagnosed?
The BMW P0571 code can be diagnosed using a diagnostic scanner that can read fault codes. The technician will also inspect the brake light switch, wiring harness, and brake pedal position sensor for any signs of damage or wear.
What are the potential consequences of ignoring the BMW P0571 code?
Ignoring the BMW P0571 code can lead to safety issues, such as the brake lights not working properly and the transmission not shifting out of park. It can also cause damage to other components in the vehicle.
Is the BMW P0571 code covered under warranty?
Whether the BMW P0571 code is covered under warranty depends on the specific warranty terms and conditions. It is best to check with your dealership or warranty provider to determine if the repair is covered.
How is the BMW P0571 code fixed?
The BMW P0571 code can be fixed by replacing the faulty brake light switch, repairing any damaged wiring, or replacing the brake pedal position sensor if necessary.
Learn about other similar BMW Fault Codes from our BMW OBD 2 Fault Code List.