2005 Cadillac STS - Electric Vehicle Guide
The 2005 Cadillac STS belongs to a Cadillac STS lineup that Know Your Ride tracks across 3 model years, from 2005 to 2007. It is an all-electric vehicle, so it skips the oil changes, spark plugs and exhaust-system service of a combustion STS entirely. It is configured as rear-wheel drive with an automatic (s5). This 2005 car is the earliest model year on record for the Cadillac STS.
The high-voltage battery is covered for 8 years or 100,000 miles, separate from the bumper-to-bumper warranty. Routine upkeep centers on tire rotation, DOT 3 brake fluid, Dex-Cool battery/cabin coolant, cabin air filters and brake service rather than engine oil. Know Your Ride lists 14 scheduled maintenance items for this vehicle, the earliest interval falling at 6,000 miles. Documented torque values include lug nut 100 ft-lb.
There are 3 safety recalls on record; one covers: CERTAIN VEHICLES EQUIPPED WITH V6 ENGINES MAY HAVE A CONDITION WHERE FUEL IS NO LONGER SUPPLIED TO THE ENGINE. THIS CONDITION OCCURS WITHOUT THE.... Its overall reliability signal is rated "Excellent" based on aggregated complaint and crash data.
Estimated annual charging cost runs near $2,450.
Quick Specs
| Battery warranty | 8 yr / 100,000 mi |
| Est. annual charging | $2,450 |
| Coolant | Dex-Cool |
| Open recalls on record | 3 |
| Technical service bulletins | 110 |
Common Trouble Codes
- P0300 - Random/Multiple Cylinder Misfire Detected
- P0420 - Catalyst System Efficiency Below Threshold (Bank 1)
- P0171 - System too Lean (Bank 1)
- P0128 - Insufficient Coolant Temperature for Stable Operation
- P0442 - Evaporative Emission Control System Leak Detected (small leak)
- P0455 - Evaporative Emission Control System Leak Detected (gross leak)
- P0700 - Transmission Control System Malfunction
- P0301 - Cylinder 1 Misfire Detected
- U0100 - Lost Communication With ECM/PCM A
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Part of the free Know Your Ride vehicle maintenance reference. Figures are sourced from EPA, NHTSA and manufacturer data and are for general reference - always confirm with your owner's manual.