Experiencing issues with your Dei Remote Start Key Fob can be frustrating, especially when you’re in a hurry or facing harsh weather conditions. DEI (Directed Electronics, Inc.) is a well-known brand in vehicle security and remote start systems, offering convenience and peace of mind. However, like any electronic device, these systems can encounter problems. This guide addresses common issues users face with their DEI remote start key fobs, drawing from real-world experiences and expert advice to help you diagnose and potentially resolve these problems yourself.
Common DEI Remote Start Problems and Solutions
Based on user experiences and expert insights, several recurring issues arise with DEI remote start key fobs. Understanding these common problems is the first step towards finding a solution.
Key Fob Only Flashes Lights – Engine Won’t Start
One frequently reported problem involves the key fob flashing the parking lights but failing to start the engine. This scenario is highlighted in a forum discussion where a user named Craigmac described their DEI two-button remote flashing the park lights but not initiating the engine start.
Solution: Battery Disconnect Reset
As suggested and successfully implemented by Craigmac, disconnecting the negative battery terminal for about 10 minutes can effectively reset the DEI system. This method often resolves glitches or temporary malfunctions that prevent the remote starter from engaging.
Explanation: Disconnecting the battery cuts power to the DEI system, forcing a system reset when power is restored. This process can clear minor software errors or electrical hiccups that might be hindering the remote start function.
Important Caution: Before disconnecting your vehicle’s battery, be aware of potential consequences, particularly for vehicles with anti-theft radios. As Craigmac noted, you might need your radio reset code after reconnecting the battery to unlock your stereo system. Ensure you have this code readily available if applicable to your vehicle.
Reprogramming a Replacement DEI Key Fob
Another common challenge arises when users need to replace lost or broken key fobs. The forum thread includes users like Heron and Twinspapa who sought guidance on reprogramming replacement DEI remotes, especially for the remote start functionality.
Problem: Replacing a DEI remote often means it needs to be programmed to communicate with your vehicle’s existing DEI system. Users may have instructions for basic keyless entry functions but lack specific steps for re-establishing the remote start feature, particularly on older or aftermarket systems.
Solution: Understanding Button Combinations and System Programming
DEI systems often use button combinations for various functions, including remote start. In Heron’s case, their original setup used button 2 for remote start. Strugari, a helpful forum contributor, pointed out that typically, DEI remote starters are programmed to start by pressing both buttons together. Button 2 alone might be assigned to a trunk release function if installed.
Key Programming Considerations:
- Button Functionality: Determine the correct button or button combination for remote start. It could be a single button press, holding a button, or pressing two buttons simultaneously. Experiment with combinations like holding button 1 and 2 together for a few seconds.
- Date Stamp and Model Number: Strugari mentioned that DEI keyless entry systems often have a date stamp on the back, indicating the manufacturing date. Programming procedures can vary based on this date. Identifying the DEI unit model (like Heron’s “Your Valet 710 series”) can also help in finding specific programming guides online or through professional installers.
- On/Off Switch and Hood Switch: Before assuming reprogramming is needed, ensure the system’s on/off switch (often located under the dash) is in the ‘on’ position and that the hood switch is functioning correctly. A faulty hood switch, designed as a safety feature to prevent remote starting while the hood is open, can disable the remote start.
Key Fob Rapidly Flashing – No Start After Battery Change
Letsride encountered a situation where their DEI Valet remote started flashing rapidly after changing the vehicle’s battery cable. This rapid flashing usually indicates a problem, preventing the remote starter from engaging.
Troubleshooting Steps:
- Check Power Wires and Fuses: As Strugari advised, after battery disconnection and reconnection, fuses can sometimes fail. Locate the DEI remote starter unit (often near the ignition switch) and check the power wires and their inline 30 amp fuses. Ensure they are intact and providing power.
- Verify On/Off Switch: Confirm the DEI system’s on/off toggle switch is properly connected and in the ‘on’ position. Letsride discovered cut wires to a toggle switch, suggesting a potential issue with the power supply or system activation.
- Inspect Hood Switch: Ensure the hood switch is correctly positioned and functioning. A misaligned or faulty hood switch can send a false signal that the hood is open, preventing remote start.
Door Lock Issues with DEI Remote Start
Penny26 described a door lock problem where their DEI system, while starting the car, only unlocked the driver’s door instead of all doors, a function that previously worked correctly.
Diagnosis and Potential Causes:
- Factory vs. Aftermarket Door Locks: Determine if your vehicle has factory-installed power door locks or if they were added aftermarket. Aftermarket door lock systems are often integrated with remote start systems.
- Door Lock Module and Fuses: Strugari suggested that aftermarket door lock systems usually involve a separate module, potentially located in the driver’s side kick panel or under the dash. Check for a blown fuse related to this door lock module.
- Wiring Connections: If fuses are not the issue, examine the wiring connections from the DEI remote starter to the door lock module. Loose or corroded connections can cause intermittent or partial door lock functionality.
Conclusion
Troubleshooting DEI remote start key fob issues often involves a systematic approach of identifying the symptoms, understanding the potential causes, and methodically checking possible solutions. From simple resets to checking fuses and wiring, many common problems can be addressed with basic troubleshooting steps.
If you continue to experience problems after trying these solutions, or if you are uncomfortable working with your vehicle’s electrical system, it is always recommended to consult a professional car audio or remote start installer. They possess the expertise and tools to accurately diagnose and repair more complex DEI remote start system issues, ensuring your system functions reliably and safely.
