2016 Mercedes-Benz Metris Serpentine Belt: Routing, Replacement, and Part Numbers

<h2>Quick Answer</h2> <ul> <li>**Belt Length & Rib Count:** Approximately 2260mm (89 inches), 6-rib.</li> <li>**OEM Belt Part Number:** We recommend verifying with a Mercedes-Benz dealership using your VIN.</li> <li>**Aftermarket Cross-References:** <ul> <li>Gates: K060890 (or equivalent for 89.0 inch / 2260mm, 6-rib)</li> <li>Dayco: 5060890 (or equivalent for 89.0 inch / 2260mm, 6-rib)</li> <li>Continental Elite: 4060890 (or equivalent for 89.0 inch / 2260mm, 6-rib)</li> </ul> </li> <li>**Auto-Tensioner Part Number:** Please verify with a Mercedes-Benz dealership using your VIN.</li> <li>**Idler Pulley Part Number:** Please verify with a Mercedes-Benz dealership using your VIN.</li> </ul> <h2>Belt Routing</h2>

Before you begin any work, it is CRUCIAL to take a clear photograph of your existing serpentine belt routing. Even if you're confident in the diagram below, having a visual reference of your specific vehicle's setup can prevent errors during reinstallation. The Mercedes-Benz Metris may have variations based on engine options (e.g., 2.0L M274 gasoline engine or OM651 diesel engine), which can affect belt routing.

For the 2016 Mercedes-Benz Metris, a typical serpentine belt routing for the 2.0L M274 gasoline engine or OM651 diesel engine generally follows this path. Start from the crankshaft pulley at the bottom and proceed as follows:

1. From the Crankshaft Pulley (the largest pulley at the bottom central part of the engine).
2. The belt then goes up and over the A/C Compressor Pulley.
3. From the A/C compressor, the belt routes to the Idler Pulley, which is typically a smooth pulley providing tension or guiding the belt.
4. Next, the belt wraps around the Alternator Pulley (usually located higher up on the engine).
5. From the alternator, it may then go to the Power Steering Pump Pulley (if applicable and independently driven by this belt).
6. The belt then runs to the Water Pump Pulley.
7. Finally, the belt goes to the Automatic Belt Tensioner Pulley, which maintains proper tension on the belt before returning to the crankshaft pulley.

Remember to verify this routing against your vehicle's actual setup by referring to your photograph or a service manual specific to your engine variant.

<h2>How to Replace the Serpentine Belt</h2>

Replacing the serpentine belt on your 2016 Mercedes-Benz Metris requires a few basic tools and patience. This process is generally similar for both the gasoline (M274) and diesel (OM651) engines, but always consult your vehicle's service manual for specific instructions.

1. Safety First: Ensure the engine is cool and the vehicle is securely parked with the engine off. Disconnect the negative terminal of your battery to prevent accidental starting.
2. Locate the Tensioner: Identify the automatic belt tensioner. It will have a square hole or a bolt head designed for a wrench or a specialized serpentine belt tool.
3. Relieve Tension: Insert a 3/8-inch breaker bar or the appropriate serpentine belt tool into the square hole or onto the bolt head of the tensioner. Gently rotate the tensioner to relieve tension on the belt. This will allow you to remove the belt from one of the smooth pulleys.
4. Remove the Old Belt: Once tension is relieved, carefully slip the old belt off the pulleys, paying close attention to its original routing (refer to your photograph!).
5. Inspect: While the belt is off, inspect all pulleys for any signs of wear, wobbling, or excessive play. Also, check the tensioner for proper function and resistance.
6. Install the New Belt: Following your previously taken photograph or diagram, route the new serpentine belt around all the pulleys, leaving the last pulley (usually a smooth idler or the tensioner itself) for last.
7. Apply Tension: Again, use your breaker bar or serpentine belt tool to rotate the tensioner, creating enough slack to slip the new belt over the final pulley.
8. Release Tension: Slowly release the tensioner, allowing it to apply proper tension to the new belt.
9. Verify Routing: Double-check that the new belt is seated correctly in all the pulley grooves and that the routing matches your photograph.
10. Test: Reconnect the battery. Start the engine and listen for any unusual noises. Observe the belt's operation for a few minutes to ensure it runs smoothly and doesn't slip.

<h2>Replacement Interval</h2>

Mercedes-Benz typically recommends inspecting the serpentine belt at regular service intervals, usually every 15,000 to 30,000 miles or every 1-2 years. Replacement is generally recommended between 60,000 to 100,000 miles, or sooner if signs of wear are visible. Always refer to your 2016 Mercedes-Benz Metris owner's manual or service schedule for the most accurate and manufacturer-specific replacement intervals for your engine type.

<h2>Signs of a Failing Belt or Tensioner</h2>

Ignoring a failing serpentine belt or tensioner can lead to significant issues, as these components are vital for powering many engine accessories. Be vigilant for the following signs:

• Squealing or Chirping Noises: This is the most common sign. A loose, worn, or misaligned belt, or a failing pulley/tensioner, can produce loud squealing or chirping sounds, especially during cold starts or when turning the steering wheel.
• Cracks, Fraying, or Glazing on the Belt: Visually inspect the belt. Deep cracks, fraying edges, missing ribs, or a shiny, glazed appearance on the belt's surface indicate it's time for replacement.
• Loss of Power Steering, A/C, or Alternator Function: If the belt breaks, or slips significantly, you will immediately lose power to the accessories it drives. This can mean loss of power steering assist, no air conditioning, and a battery warning light (due to the alternator not charging).
• Wobbling or Misaligned Pulleys: Observe the pulleys while the engine is running (from a safe distance!). Any wobbling, excessive play, or misalignment in the pulleys can indicate a bad bearing or a failing tensioner.
• Tensioner Not Applying Proper Tension: A failing automatic tensioner might not maintain adequate tension on the belt. This can lead to belt slippage and noise. Sometimes you can see the tensioner arm bouncing excessively.
• Overheating Engine: While less common than other signs, a failed belt can prevent the water pump from circulating coolant, leading to engine overheating.

Address any of these symptoms promptly to prevent further damage or breakdown.

Find a trusted shop on Repairius.