Engine-Codes - Mercury - U2473 MERCURY

U2473 MERCURY - Unexpected Vehicle Speed

Repair Importance Level: 3/3
Repair Difficulty Level: 3/3  What is this?
Table of contents

U2473 MERCURY Possible Causes

  • Vehicle Speed Signal
  • Faulty Audio Control Module (ACM)
  • Audio Control Module (ACM) harness is open or shorted
  • Audio Control Module (ACM) circuit poor electrical connection

How is the U2473 MERCURY code repair?

Start by checking the "Possible Causes" listed above. Visually inspect the related wiring harness and connectors. Check for damaged components and look for broken, bent, pushed out, or corroded connector's pins.

What is the cost to diagnose the U2473 MERCURY code

Labor: 1.0

The cost to diagnose the U2473 MERCURY code is 1.0 hour of labor. The auto repair's diagnosis time and labor rates vary by location, vehicle's make and model, and even your engine type. Most auto repair shops charge between $75 and $150 per hour.
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Possible Symptoms

  • Engine Light ON (or Service Engine Soon Warning Light)

U2473 MERCURY Meaning

The primary source of vehicle location for the navigation system is the Audio Control Module (ACM) receiving the position signal through the Global Positioning System (GPS) antenna.
In addition, the ACM receives the wheel pulse signal from the Instrument Cluster (IC) (which gateways the signal from the Anti-Lock Brake System (ABS) module). This secondary signal is used to calculate vehicle position when the GPS signal is lost. It also supports the adaptive learning function of the ACM, whereby the ACM can compensate for long-term differences between the GPS signal location, and the actual distance traveled by the vehicle. The Diagnostic Trouble Code (DTC) will set when the calculated vehicle distance traveled based on the wheel pulse signal does not agree with the GPS antenna location.

More Information

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