Yamaha Digital Electric Steering Problems

Yamaha's Digital Electric Steering (DES) has revolutionized boating, offering enhanced control, reduced fatigue, and a more intuitive driving experience. However, like any sophisticated technology, DES systems can encounter issues. Understanding these potential problems, their causes, and possible solutions is crucial for boat owners to ensure smooth and safe operation on the water. This guide will walk you through the common challenges faced with Yamaha DES, offering practical advice and insights to help you troubleshoot and resolve them.

What Exactly Is Digital Electric Steering, Anyway?

Before diving into the problems, let's quickly recap what Yamaha DES is all about. Unlike traditional hydraulic steering, DES uses an electric motor to assist the driver in turning the boat. Sensors monitor steering wheel input, boat speed, and engine trim, providing variable steering assistance based on the conditions. This means lighter steering at low speeds for easy maneuvering around docks and firmer, more precise steering at higher speeds for confident control. This system also integrates features like Heading Hold and Set Point, which further enhance the boating experience.

Common Culprits: Troubleshooting Your Yamaha DES

So, your DES isn't behaving as it should? Let's explore some of the usual suspects:

1. The Dreaded "DES System Error" Message

This is perhaps the most common complaint. The multi-function display (MFD) flashes a "DES System Error" message, sometimes accompanied by a warning horn. What does it mean? It's a broad indicator that something is wrong, but it doesn't pinpoint the exact cause.

• Possible Causes:

  • Low Battery Voltage: DES systems are power-hungry. If your battery voltage drops too low, the system may not function correctly. This is especially true during extended idling or when running multiple accessories.
  • Loose or Corroded Connections: Saltwater and electrical connections are a recipe for corrosion. Inspect all wiring connections related to the DES system, including those at the battery, the DES control unit, and the steering motor.
  • Faulty Sensors: The DES system relies on various sensors to monitor steering angle, boat speed, and engine trim. A faulty sensor can send incorrect data to the control unit, triggering an error.
  • Software Glitches: Like any computer system, the DES control unit can experience software glitches. Sometimes, a simple reset can resolve the issue.
  • Steering Motor Issues: The electric motor that provides steering assistance can fail due to wear and tear, corrosion, or electrical problems.
  • Faulty DES Control Unit: Although less common, the DES control unit itself can fail.

• Troubleshooting Steps:

  • Check Battery Voltage: Use a multimeter to measure the battery voltage. It should be above 12 volts with the engine off and above 13.5 volts with the engine running.
  • Inspect Wiring Connections: Look for loose, corroded, or damaged wires. Clean corroded connections with a wire brush and apply dielectric grease to protect them. Make sure all connections are tight.
  • Try a System Reset: Consult your owner's manual for the specific procedure to reset the DES system. This often involves turning the ignition key on and off a certain number of times.
  • Scan for Diagnostic Codes: If you have access to a Yamaha diagnostic tool, scan the DES system for error codes. These codes can provide more specific information about the problem.
  • Visually Inspect the Steering Motor: Check the motor for any signs of damage or corrosion.

2. Stiff or Erratic Steering

Instead of a smooth, effortless turn, you might find the steering feels stiff, jerky, or uneven. This can be unnerving, especially at higher speeds.

• Possible Causes:

  • Low Power Assist: The DES system may not be providing enough power assist. This could be due to a low battery voltage, a faulty sensor, or a problem with the control unit.
  • Binding in the Steering Linkage: The mechanical linkage between the steering motor and the outboard engine can become bound due to corrosion, lack of lubrication, or damage.
  • Steering Motor Issues: A failing steering motor can cause erratic or stiff steering.

• Troubleshooting Steps:

  • Check Power Assist Settings: Ensure the power assist level is set appropriately on your MFD.
  • Inspect the Steering Linkage: Look for any signs of corrosion, damage, or binding. Lubricate the linkage with marine grease.
  • Check Steering Cable Tension: If applicable, inspect the steering cables for proper tension and freedom of movement.
  • Test Steering Motor Operation: Listen for unusual noises from the steering motor while turning the wheel.

3. Heading Hold or Set Point Not Working

These features are key benefits of DES. If they fail to engage or don't function properly, it defeats the purpose of having DES in the first place.

• Possible Causes:

  • GPS Signal Loss: Heading Hold and Set Point rely on a strong GPS signal. If the signal is weak or intermittent, these features may not work correctly.
  • Faulty GPS Antenna: A damaged or malfunctioning GPS antenna can prevent the system from receiving a GPS signal.
  • Software Glitches: Software bugs can sometimes interfere with the operation of these features.
  • Incorrect System Configuration: Verify that Heading Hold and Set Point are enabled in the system settings.

• Troubleshooting Steps:

  • Check GPS Signal Strength: Ensure you have a strong GPS signal before attempting to use Heading Hold or Set Point.
  • Inspect the GPS Antenna: Check the antenna for any signs of damage or corrosion.
  • Update Software: Ensure your DES system software is up to date.
  • Review System Settings: Confirm that Heading Hold and Set Point are enabled and configured correctly.

4. The Steering Wheel Won't Return to Center

A properly functioning steering system should naturally return the steering wheel to the center position after a turn. If it doesn't, it can make steering feel heavy and require constant correction.

• Possible Causes:

  • Binding in the Steering Linkage: As mentioned earlier, binding in the linkage can prevent the wheel from returning to center.
  • Insufficient Power Assist: If the DES system isn't providing enough power assist, the wheel may not return to center easily.
  • Steering Motor Issues: A failing steering motor can also contribute to this problem.

• Troubleshooting Steps:

  • Inspect and Lubricate Steering Linkage: Check for binding and lubricate the linkage.
  • Check Power Assist Settings: Ensure the power assist is set appropriately.
  • Test Steering Motor Operation: Listen for unusual noises from the steering motor.

Proactive Prevention: Keeping Your DES in Tip-Top Shape

Prevention is always better than cure! Here are some steps you can take to minimize DES problems:

• Regular Inspections: Regularly inspect all wiring connections, the steering linkage, and the steering motor for signs of corrosion or damage.
• Proper Lubrication: Lubricate the steering linkage with marine grease at recommended intervals.
• Battery Maintenance: Maintain your battery in good condition. Ensure it's fully charged and that the terminals are clean and corrosion-free.
• Software Updates: Keep your DES system software up to date.
• Professional Service: Schedule regular maintenance with a qualified Yamaha marine technician.

When to Call in the Experts

While you can tackle some of these troubleshooting steps yourself, there are times when it's best to seek professional help. If you're not comfortable working with electrical systems or if you've tried the troubleshooting steps and the problem persists, it's time to consult a qualified Yamaha marine technician. They have the expertise, tools, and diagnostic equipment to accurately diagnose and repair complex DES issues. Attempting to fix a problem yourself without the proper knowledge can potentially cause further damage and void your warranty.

Frequently Asked Questions

• Q: What does "DES System Error" mean?

  • It indicates a problem within the Digital Electric Steering system, ranging from low voltage to a faulty sensor. A diagnostic scan can pinpoint the exact issue.

• Q: Can I reset the DES system myself?

  • Yes, often by turning the ignition on and off a specific number of times. Consult your owner's manual for the exact procedure.

• Q: Is DES covered under warranty?

  • Yes, typically under the standard Yamaha outboard warranty. Check your warranty documentation for specific coverage details.

• Q: Why is my steering wheel hard to turn at low speeds?

  • Check your power assist settings; they may be set too low. Also, ensure your battery is properly charged.

• Q: How often should I service my DES system?

  • Follow the maintenance schedule outlined in your owner's manual. Regular inspections and lubrication are key.

Conclusion

Yamaha's Digital Electric Steering offers a significant improvement in boating control and comfort, but occasional problems can arise. By understanding the common issues, troubleshooting steps, and preventative measures outlined in this guide, you can keep your DES system running smoothly and enjoy a more enjoyable and safe boating experience. Remember, when in doubt, consult a qualified Yamaha marine technician for expert assistance.