SprinterArmor™ Ignition Module Protection Shield V2.0

Installation Manual

Purpose

The SprinterArmor™ Ignition Module Protection Shield is designed to protect the factory ignition (EZS) module from water, moisture, and condensation — common causes of corrosion and intermittent electrical faults.

This shield provides a durable, sealed, OEM-style solution without modifying the vehicle.

Tools Required

• Torx T25 screwdriver
• 10mm socket and ratchet
• Phillips #2 screwdriver
• Trim removal tool or small flat plastic pry tool
• Clean rag (recommended)

Estimated Installation Time

15–20 minutes

Installation Steps

Step 1: Power Down the Vehicle

• Turn the ignition off.
• Disconnect the negative cable at the factory disconnect point (VERY IMPORTANT).
• Allow the vehicle to sit for at least 5 minutes.

Step 2: Remove the Lower Dash Trim

• Locate the driver-side floor covering holding bracket. Remove the two (2) Torx T25 screws, then remove the driver-side factory floor covering.

• On the lower left side, locate the plastic panel that covers the left A-pillar and wheel well area (this panel includes the hood release handle).
• Unscrew the hood release mechanism by removing one (1) T25 screw.
• Remove the lower far-left dash panel.
• Remove one (1) T25 screw from the OBD port/hood release cover panel.
• Disconnect the OBD connector by clicking it out.
• Gently pull the panel to the right to release it.

Step 3: Locate the Ignition (EZS) Module

• The ignition module is mounted on the wheel arch support panel, secured with two plastic nuts. It has blue and white connectors attached.
• Gently and carefully release the connectors from the module to inspect if any rust is present on the connector needles (If any corrosion is present and gets sealed inside the case without being treated, it can lead to permanent module damage.) 
• Use a plastic trim tool to pry the plastic nuts (along with the module) off the welded studs.
• On some RV modification it may be required to remove tape from the wiring splice to release Blue Connector wiring, as there might not be enough wiring to install W.Shield
• If you have a MID city dongle or a Large Tank dongle - you need to align wiring first, and only after that, do the EIS Shield Installation 

Step 4: Install the SprinterArmor™ Protection Shield V2.0

• Position the shield base over the ignition module.
• Ensure the wiring passes cleanly through the designated opening.
  
• Position the ignition module inside the shield. Pay attention to alignment — the module should sit flush around the edge of the shield.
• Install the cover and gently press it in so it seats correctly.
• The flexible TPU seal should compress slightly, forming a moisture barrier.
• Once the back cover is installed, install and position Water Shield on top of the module and align it with the top hole 

• Install the ignition module assembly back onto the vehicle:
  • Align the connectors with the blue connector side facing down and the white connector side facing up.
  • Align the top blue connector wiring alongside the Water Shield Guard
  • Route the wiring alongside the nearby CPC module.
    
• No excessive force should be required.
• Snap the module on original studs 
• We designed this case as an exact copy of the original Mercedes EIS module. Every 2019–2026 Sprinter uses the same size and stud positions, so if your EIS fits in our case, it will mount perfectly on the studs.  

Step 5: Verify Fitment

Confirm the following:

• The shield is fully seated
• Wiring is not pinched or strained
• All connectors remain fully engaged

Step 6: Reinstall Trim Panels and Floor Mat

• Reinstall the lower dash panels.
• Tighten Torx screws snugly (do not overtighten).
• Reinstall the hood release mechanism.
• Reinstall the driver floor mat.
• Reconnect the ground cable at the factory disconnect point.

Step 7: Final Check

• Start the vehicle.
• Confirm normal ignition operation.
• Verify no warning lights or error codes appear.

Installation is complete.

Notes & Recommendations

• Verify the back cover sits correctly and snaps all the way into the grooves. 
• Verify Water Shield is correctly positioned and aligned properly. 
• Check for mold or corrosion on the ignition module connection points. Clean any mold or rust before reconnecting.
• If an alignment pin is damaged during installation, the shield will still function correctly. The pins are used for positioning only and are not structural.
  
• This product protects the ignition module from moisture exposure but does not repair existing wiring damage or active windshield/body leaks. Any ongoing leaks should be addressed separately.

Warranty & Support

SprinterArmor™ products are backed by a 2-year limited warranty.

If you have any questions during installation, contact us at:

www.sprinterarmor.com or message us directly through our support channels.