Self-diagnosis
1. Check the fluid level in the gearbox:
– Locate the dipstick to check the fluid level in the gearbox.
– Clean the dipstick and place it back.
– Pull the dipstick out again and check the fluid level: it should be between the “Min” and “Max” marks.
– If the fluid level is low, add fluid according to the manufacturer’s recommendations.
2. Check the color and smell of the fluid in the gearbox:
– Transmission fluid is usually red or pink.
– If the liquid is brown or black, it contains impurities.
– If the fluid smells burnt, this may indicate internal damage.
3. Listen to noises when shifting gears:
– Start the engine and shift gears forward and reverse.
– Pay attention to any unusual noises such as humming, grinding or vibration.
4. Feel delays or slippage when changing gears:
– Accelerate and brake to check for smooth gear shifting.
– Pay attention to any delays, slipping or jerking when switching.
Professional diagnostics
If you find any problems during your self-diagnosis, take it to a mechanic for a more detailed check.
1. Computer diagnostics:
– The mechanic will connect a scanner to the car’s computer to read error codes that may indicate transmission problems.
2. Visual inspection:
– A mechanic will inspect the transmission for leaks, damage, or wear.
3. Test ride:
– The mechanic will conduct a test drive to evaluate the transmission’s performance.
Signs indicating the need to diagnose an automatic transmission:
* Problems with gear shifting
* Delays or slipping when changing gears
* Noises when shifting gears
*Low fluid level in gearbox
* Burnt smell of gearbox fluid
* Vibration or jerking when accelerating or braking