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Once the check engine light comes on in my Benz E350, there's not much I can do but wait until the car is repaired.
The light stays on, signaling an issue I can't ignore. Unfortunately, this often leads to costly repairs—around $4000—because fixing the problem requires removing the engine, disassembling parts, and replacing the faulty components. Worse yet, it means I won't be able to pass the emissions test.
The camshaft adjuster solenoid failure is a serious issue that can severely affect both engine performance and emissions compliance. In this guide, we'll walk through the symptoms of solenoid failure and the steps to fix it before it leads to bigger, more expensive problems.
What is a Camshaft Adjuster Solenoid
The camshaft adjuster solenoid is responsible for controlling the camshaft timing. This solenoid uses oil pressure to adjust the camshaft's position, helping your engine's timing to stay in sync with the crankshaft.
This ensures that your Benz E350 engine operates efficiently and smoothly under all conditions. If the solenoid fails, it can result in a variety of issues that can affect the overall performance of the vehicle.
Related Reading: How To Make An Active Test On Benz Using Ancel V6 Pro
Common Benz E350 Camshaft Adjuster Solenoid Failure Symptoms
1. Check Engine Light Activation
One of the first signs that your Benz E350 camshaft adjuster solenoid may be failing is the activation of the check engine light.
When the engine control module detects an issue with the camshaft timing, it will trigger the check engine light. This is often accompanied by diagnostic trouble codes (DTCs) such as P0010, P0011, or P0016, which are related to camshaft timing and solenoid malfunction.
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P0010: Camshaft Position Actuator Circuit/Open Bank 1
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P0011: Camshaft Position Timing Over-Advanced or System Performance Bank 1
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P0016: Crankshaft Position - Camshaft Position Correlation Bank 1 Sensor A
2. Poor Engine Performance
A malfunctioning camshaft adjuster solenoid can lead to poor engine performance. You may notice a lack of power or hesitation during acceleration.
This happens because the camshaft timing is out of sync with the crankshaft, preventing the engine from firing efficiently. The Benz E350 may feel sluggish, especially when trying to accelerate from a stop or while driving at higher speeds.
3. Rough Idling
If the camshaft adjuster solenoid is failing, the engine may experience rough idling. This happens because the incorrect camshaft timing can cause inconsistent engine cycles, leading to an unstable idle.
You may notice the car shaking or vibrating when at a stoplight or in park mode. In more severe cases, the engine may even stall.
4. Reduced Fuel Efficiency
A failing camshaft adjuster solenoid can lead to reduced fuel efficiency. Since the solenoid is responsible for adjusting the timing of the intake and exhaust valves, any misalignment will result in improper combustion. This can lead to poor fuel consumption as the engine has to work harder to maintain performance.
5. Engine Misfires
One of the more severe symptoms of camshaft adjuster solenoid failure is engine misfires. When the camshaft timing is incorrect, the engine may misfire, causing it to hesitate or even stall completely. Misfires can be dangerous and often result in more expensive repairs if left unchecked.
6. Loud Engine Noise
A noisy engine may also indicate a problem with the camshaft adjuster solenoid. If the solenoid is malfunctioning, it can cause an increase in engine noise due to improper valve timing. This may sound like a ticking, knocking, or clattering noise coming from the engine bay, and it's a clear indication that something isn't functioning properly.
How to Fix a Benz E350 Camshaft Adjuster Solenoid Failure
If you're experiencing any of the symptoms mentioned above, it's essential to address the issue quickly to prevent further engine damage. Here's a step-by-step guide on how to fix a Benz E350 camshaft adjuster solenoid failure:
1. Diagnose the Problem
The first step is to diagnose the problem using Ancel car diagnostic tool to check for any trouble codes. If you see codes related to the camshaft timing, such as P0010 or P0011, it's likely that the camshaft adjuster solenoid is at fault. A professional mechanic will have the tools and expertise to confirm the issue.
2. Locate the Camshaft Adjuster Solenoid
Once the problem is confirmed, you will need to locate the camshaft adjuster solenoid. In most cases, it is located near the front of the engine, connected to the camshaft. Refer to the vehicle's service manual to identify the exact location.
3. Remove the Old Camshaft Adjuster Solenoid
After locating the solenoid, you can proceed to remove it. Start by disconnecting the battery to prevent any electrical shorts. Then, remove any necessary components such as the engine cover or timing belt components that are in the way. Once you have access to the solenoid, unscrew it and carefully remove it from its position.
4. Install the New Camshaft Adjuster Solenoid
Install the new camshaft adjuster solenoid by carefully positioning it and securing it with screws or bolts. Ensure that the solenoid is properly aligned and that the electrical connections are intact. Once the solenoid is in place, reassemble any components you had to remove.
5. Clear the Diagnostic Codes
After the new solenoid is installed, use Ancel mercedes benz obd2 scanner to clear the diagnostic trouble codes. Start the engine to check if the check engine light has gone off and the engine is running smoothly.
6. Test the Engine Performance
Finally, take the car for a test drive to ensure that the engine is performing as expected. Monitor for any remaining symptoms such as rough idling, hesitation, or poor acceleration. If the issue persists, there may be a deeper problem that requires further investigation.
Prevention Tips for Camshaft Adjuster Solenoid Failure
To extend the lifespan of your Benz E350 camshaft adjuster solenoid and prevent future failures, here are some helpful tips:
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Regular Maintenance: Perform regular oil changes and use high-quality oil to prevent sludge buildup, which can cause solenoid failure.
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Check for Leaks: Ensure that there are no oil leaks around the solenoid, as low oil pressure can affect its performance.
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Avoid Engine Overheating: Make sure the engine stays within its normal operating temperature range to avoid damage to the camshaft adjuster solenoid.
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Timely Repairs: If you notice any symptoms of a failing solenoid, address the issue promptly to avoid further damage to the engine.
