Safety Warning

DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.

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HOMESERVICE MANUALSFORD2005TAURUS SEL, 4D SEDANREPAIR AND DIAGNOSISELECTRICALGAUGESINSTRUMENT CLUSTER SYSTEMDIAGNOSIS AND TESTINGINSTRUMENT CLUSTERSYMPTOM CHART

2005 Ford Taurus SEL, 4D Sedan

Symptom Chart

2005 Ford Taurus SEL, 4D SedanSECTION Symptom Chart

PROBLEM SYMPTOM CHART

Condition	Possible Sources	Action
No communication with the instrument cluster	Circuitry Controller area network (CAN) circuits Instrument cluster	GO to PINPOINT TEST A .
Incorrect fuel gauge indication - without flex-fuel	Circuitry Fuel tank Instrument cluster Fuel sender	GO to PINPOINT TEST B .
Incorrect fuel gauge indication - with flex-fuel	Circuitry Fuel tank Instrument cluster Flex-fuel sensor module	GO to PINPOINT TEST C .
Incorrect temperature gauge indication	Circuitry Engine coolant temperature (ECT) sender Instrument cluster Powertrain control module (PCM)	GO to PINPOINT TEST D .
The low oil pressure warning indicator is never/always on	Circuitry Engine oil pressure switch Instrument cluster	GO to PINPOINT TEST E .
The speedometer/odometer is inoperative	Powertrain control module (PCM) Circuitry Instrument cluster	GO to PINPOINT TEST F .
The tachometer is inoperative	Circuitry Instrument cluster Powertrain control module (PCM)	GO to PINPOINT TEST G .
The low fuel warning indicator is never/always on	Instrument cluster Flex-fuel sensor module (if equipped)	GO to PINPOINT TEST H .
The charging system warning indicator is never on	Circuitry Powertrain control module (PCM) Instrument cluster	GO to PINPOINT TEST I .
The charging system warning indicator is always on	Circuitry Generator Powertrain control module (PCM) Instrument cluster	REFER to CHARGING SYSTEM - GENERAL INFORMATION .
The brake warning indicator is never on	Circuitry Parking brake switch Brake fluid level switch Instrument cluster	GO to PINPOINT TEST J .
The brake warning indicator is always on	Circuitry Parking brake switch Brake fluid level switch Instrument cluster	GO to PINPOINT TEST K .
The malfunction indicator lamp (MIL) is always on	Circuitry Powertrain control module (PCM) Instrument cluster	See INTRODUCTION - GASOLINE .
The malfunction indicator lamp (MIL) is never on	Circuitry Instrument cluster Powertrain control module (PCM) Instrument cluster	GO to PINPOINT TEST L .
The safety belt warning indicator does not operate correctly	Circuitry Safety belt buckle switch Smart junction box (SJB) Instrument cluster	GO to PINPOINT TEST M .
The air bag warning indicator is never/always on	Circuitry Instrument cluster Restraint control module (RCM)	GO to PINPOINT TEST N .
The LH turn indicator is never on	Circuitry Instrument cluster	GO to PINPOINT TEST O .
The RH turn indicator is never on	Circuitry Instrument cluster	GO to PINPOINT TEST P .
The high beam indicator is never on	Circuitry Instrument cluster	GO to PINPOINT TEST Q .
The traction control indicator is never/always on (if equipped)	Anti-lock brake system (ABS) module Instrument cluster Circuitry	GO to PINPOINT TEST R .
The anti-lock brake system (ABS) warning indicator is always on	Circuitry Instrument cluster ABS module	REFER to ANTI-LOCK CONTROL .
The anti-lock brake system (ABS) warning indicator is never on	Circuitry ABS module Instrument cluster	GO to PINPOINT TEST S .
The cruise control indicator is never/always on	Circuitry Speed control servo Instrument cluster	GO to PINPOINT TEST T .
The check fuel cap warning indicator is never/always on	Circuitry Powertrain control module (PCM) Instrument cluster	GO to PINPOINT TEST U .
The theft warning indicator is never/always on	Circuitry Instrument cluster Powertrain control module (PCM)	GO to PINPOINT TEST V .
The instrument cluster is inoperative	Circuitry Instrument cluster	GO to PINPOINT TEST W .

RENDER: 1.0x

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When to See a Mechanic

Stop DIY work and contact a certified mechanic immediately if any of the following apply:

• You smell fuel, burning insulation, or see smoke.
• Brakes feel soft, pull hard to one side, or make grinding noises.
• The engine overheats, stalls repeatedly, or misfires under load.
• You are missing required tools, torque specs, or safe lifting equipment.
• You are not confident in the next step or safety outcome.