An automatic transmission car that won’t move can be a frustrating experience․ Here’s a breakdown of common issues and how to approach troubleshooting⁚
Safety First
Before you start, ensure the car is parked on a level surface, the emergency brake is engaged, and the engine is off․
1․ Check the Basics
- Battery⁚ A dead or low battery can prevent the car from starting, thus preventing the transmission from engaging․ Check the battery terminals for corrosion and test the battery voltage․
- Gear Selector⁚ Make sure the gear selector is in “Drive” (D) or “Low” (L)․ Double-check that it’s not in “Park” (P) or “Neutral” (N)․
- Engine⁚ Ensure the engine is running․ If it’s not starting, you’ll need to address the starting issues before moving on to transmission problems․
2․ Transmission Fluid Level
Low transmission fluid can cause slipping, delayed engagement, or complete failure to move․
- Locate the transmission dipstick (usually near the engine)․
- Remove the dipstick and wipe it clean․
- Insert the dipstick fully and then remove it again․
- Check the fluid level against the “HOT” mark on the dipstick․
- If the fluid is low, consult your owner’s manual for the correct type of transmission fluid and add it to the appropriate level․
Note⁚ If the fluid is dark, burnt, or smells bad, it may indicate a more serious transmission problem and should be addressed by a mechanic․
3․ Transmission Problems
If the fluid level is good and the car still won’t move, you may be dealing with a transmission issue․
- Solenoid Problems⁚ These electrical components control fluid flow within the transmission․ A faulty solenoid can prevent gear engagement․
- Clutch Problems⁚ Worn or damaged clutches can cause slipping or complete failure to engage․
- Internal Transmission Damage⁚ This is the most serious issue and often requires a full transmission rebuild or replacement․
4․ Other Potential Issues
- Shift Cable⁚ A broken or disconnected shift cable can prevent the transmission from receiving the correct gear selection command․
- Electrical Problems⁚ A problem with the transmission control module (TCM) or other electrical components can prevent the transmission from engaging․
When to Seek Professional Help
If you’ve checked the basics and the car still won’t move, it’s time to call a professional mechanic․ They have the tools and expertise to diagnose the problem and perform the necessary repairs․