Automatics with No Dipsticks

According to the automobile manufacturer’s research, a certain percentage of automatic transmission failures are caused by over-filling and/or using the incorrect transmission fluid. It is important to remember to NEVER over-fill the transmission assembly and to ALWAYS use the recommended transmission fluid. To discourage over-filling, some vehicle manufacturers have eliminated the dipstick on the transmission. Unfortunately, this also makes it hard to tell if the fluid level is low.

On automatic transmissions that do not have a dipstick to check the fluid level or add fluid, a fill plug is usually located on the left side or right side of the transmission. On some, there may also be a drain plug on the bottom of the transmission.

To check the fluid level, the transmission must be warm and the vehicle must be parked on a level surface or raised on a lift. Jacking up the front wheels will tilt the vehicle and give an innaccurate indication of the fluid level. Therefore, all FOUR wheels must be raised off the ground and the vehicle must be properly supported by four jack stands. NEVER crawl under a vehicle unless it is safely supported by jack stands.

When the fill plug is removed, some fluid should dribble out of the hole if the fluid is at the proper level (flush with the bottom of the fill plug hole). If no fluid comes out, add fluid to bring it up to the level of the hole.