2022 Mercedes-Benz Metris Battery Size & Group

Quick answer

• BCI Group Size: H6 (also known as Group 48)
• CCA Rating: 720 CCA minimum
• Reserve Capacity: 120 minutes minimum
• AGM vs. Flooded: AGM required
• Terminal Layout: Typically positive on the right (SAE posts)
• Physical Dimensions (H6/48): Approximately 10.9" L x 6.9" W x 6.9" H
• Dual-Battery Setup: Not applicable for this generation Metris (no diesel option in the US).

Replacement battery options

When it's time to replace the battery in your 2022 Mercedes-Benz Metris, prioritize quality AGM batteries that meet or exceed the OEM specifications. Here are a few popular options, though part numbers can vary by retailer:

• Interstate: MT5-48/H6 AGM (check local availability for exact part number)
• Optima: Optima RedTop or YellowTop (verify H6/48 fitment – many Optimas are not direct fit H6/48 replacements due to their unique case design. A custom battery hold-down may be needed - consult the Optima fitment guide carefully.)
• DieHard: Platinum AGM H6 (check local availability for exact part number)
• Odyssey: ODP-AGM48 H6 (PC1220T)
• ACDelco: 48AGMHR (check local availability for exact part number)

AGM vs flooded — which does this vehicle need?

The 2022 Mercedes-Benz Metris, like most modern Mercedes-Benz vehicles, absolutely requires an Absorbent Glass Mat (AGM) battery. The vehicle's sophisticated electrical system, which includes features like start/stop technology, relies on the deep cycling capabilities and consistent voltage delivery that AGM batteries provide. Using a traditional flooded lead-acid battery can lead to premature battery failure, error codes, and potential damage to the vehicle's electrical components. AGM batteries also offer better vibration resistance, a slower self-discharge rate, and are spill-proof.

Post-installation relearn / reset procedure

After replacing the battery in your 2022 Mercedes-Benz Metris, a few simple steps may be necessary to reset various vehicle systems. While a full "relearn" often happens automatically as you drive, some basic resets can prevent minor annoyances:

1. Window One-Touch Reset: After connecting the new battery, you may find that the automatic up/down function for your power windows doesn't work. To reset:
   • Close all windows completely.
   • Hold each window switch in the "up" position for 2-3 seconds after the window is fully closed.
   • Then, open each window completely and hold the switch in the "down" position for 2-3 seconds after the window is fully open.
   • Repeat for all windows.
2. Steering Angle Sensor (SAS) Reset: Sometimes, a battery disconnect can trigger a warning light for the Electronic Stability Program (ESP) or traction control. To reset the SAS:
   • Start the engine and turn the steering wheel all the way to the left, hold for a few seconds.
   • Turn the steering wheel all the way to the right, hold for a few seconds.
   • Return the steering wheel to the center position.
   • Drive the vehicle for a short distance (a few hundred feet) above 10-15 mph. The warning light should extinguish.
3. Radio/Infotainment System: The radio may require re-entering preset stations and adjusting sound settings. If your radio has an anti-theft code, this should not be an issue as Mercedes-Benz vehicles typically integrate the radio with the vehicle's VIN, eliminating the need for manual code entry after a battery disconnect.
4. Date and Time: You will likely need to reset the date and time in your infotainment system.

In most cases, any other system lights or warnings will self-correct after driving the vehicle for a short period.

Signs of a failing battery

Don't wait for a complete breakdown to replace your Metris battery. Watch for these common signs of a failing battery:

• Slow Engine Crank: The most common sign. The engine turns over slowly or with difficulty, especially in cold weather.
• Warning Lights: A battery warning light or check engine light on the dashboard.
• Dim Lights/Electrical Issues: Dim headlights or interior lights, or other electrical accessories (radio, power windows) acting erratically when the engine is off or just starting.
• Corrosion: Visible corrosion (white or bluish powder) on the battery terminals.
• Swollen Battery Case: The battery case appears swollen or bulging, indicating internal damage (especially dangerous with AGM batteries).
• Age: Batteries typically last 3-5 years. If your battery is older than this, it's wise to have it tested.

Common battery issues for this generation

The 2022 Mercedes-Benz Metris shares some common battery-related characteristics and potential issues with other modern luxury and commercial vehicles:

• Parasitic Drain: Modern vehicles have numerous modules and computers that draw a small amount of power even when the vehicle is off. If one of these modules malfunctions, it can create an excessive "parasitic drain," leading to a dead battery even if the battery itself is healthy.
• Frequent Short Trips: If the vehicle is primarily used for very short trips, the alternator may not have enough time to fully recharge the battery, leading to a gradual state of discharge over time.
• Temperature Extremes: Both extreme heat and extreme cold can shorten battery life. Mercedes-Benz vehicles are generally well-engineered for thermal management, but prolonged exposure to harsh conditions will impact battery longevity.
• Start/Stop System Strain: While the AGM battery is designed for it, frequent use of the start/stop system in heavy traffic can still put considerable strain on the battery over its lifespan.

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