Skip the auto shop - Our mechanics make house calls

Q: Changing automatic transmission fluid

asked by on

My car has gone 120,00 miles. It takes the car up to 8 seconds to shift from park to first gear. This differs depending on the outside temperatures. It usually shifts quicker in the summer. However, I was wondering if I should add tranny fluid. I checked the engine comaprtment which indicated low ATF level. How do I do this properly? Are there any rules as to the type or the way it needs to be done?

A: Hello. There's an update available for ...

Hello. There's an update available for the transmission control module on your 2003 BMW 330xi that is related to erratic transmission shifting. Call your local BMW dealership to determine if the update has been done. Performing the update should resolve your shifting problems. If the transmission fluid is low and the transmission fluid is serviceable through the top, you'll be able to add it through the dipstick tube. Put a funnel inside of the dipstick tube and add the proper transmission fluid.

Intermittently check the transmission level to ensure that you don't overfill it. If the fluid became low, you may have a transmission fluid leak. It is best to have the transmission inspected by a technician to determine if it is leaking. If it is leaking, have the leak repaired to bring the fluid level back to its intended specifications.

Was this answer helpful?

Need advice from certified mechanic? Get help now!

Over 1000 mechanics are ready to answer your question.
The statements expressed above are only for informational purposes and should be independently verified. Please see our terms of service for more details

Ask a Mechanic
(100% Free)

Have a car question? Get free advice from our top-rated mechanics.

Ask A Mechanic
Over 10,000 questions answered!

Get an instant quote for your car

Our certified mechanics come to you ・Backed by 12-month, 12,000-mile guarantee・Save up to 30%

Get a quote

What others are asking

Q: Tension strut replacement

Hello there, one of the commonly replaced parts on the 2009 BMW 535i is the hydraulic fluid filled bushings. These suspension components wear over time from absorbing the road shock. When the fluid filled bushings leak, it is important to...

Q: I can't get my truck out of four wheel drive

Hello. Most of the time this occurs when the actuator in the transfer case fails. If the actuator was not when you went through the puddle then that could cause it to fail from the sudden change of temperature. This...

Q: Won't start turns over

Hello. For this issue with your 1997 Saab 900, I suggest checking the operation of the crank position sensor. If the current position sensor goes bad, it won't send the parameters to the engine for it to calculate how much...

Related articles

How Do Power Car Windows Increase Passenger Safety?
Power windows are responsible for approximately 2,000 emergency room visits every year. When a power window closes, it exerts enough force to bruise or break bones, crush fingers, or restrict an airway. Though...
What Causes Hoses to Leak?
While the largest part of your engine is mechanical, hydraulics plays a significant role. You’ll find fluids at work in a number of different areas. Your car's fluids include: Engine oil Transmission...
Rules of the Road For Iowa Drivers
Driving on the roads requires knowledge of the rules, many of which are based on common sense and courtesy. However, even though you know the rules in...