Transmission or Brake Binding Issue (Cold Start)
The vehicle is in gear but won't move when the engine is cold. This could indicate a transmission problem (low fluid, internal failure) or a brake system issue (frozen caliper, seized parking brake). The cold condition suggests possible fluid viscosity or component contraction issues.
Diagnosis Details
Possible Causes
Low or contaminated transmission fluid causing insufficient hydraulic pressure when cold
Seized brake caliper or parking brake cable frozen due to moisture/rust, preventing wheel rotation
Transmission internal failure (e.g., broken pump, torque converter issue) aggravated by cold temperatures
Related OBD-II Codes
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What You Should Do
Check transmission fluid level and condition (cold).
Inspect brake calipers and parking brake for binding.
Attempt to gently rock the vehicle or apply slight throttle while monitoring for unusual noises.
If safe, try shifting to neutral and back to drive.
Do not force movement.
If unresolved, tow to a qualified mechanic.
Related Repairs
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Disclaimer: This AI-generated diagnosis is for informational reference only. Always consult a qualified mechanic for an in-person inspection. AutOwner is not responsible for decisions made based on this information.
