Q: 2005 BMW 645Ci only shifts and drives in 1st and 2nd gears

asked by on

My transmission is malfunctioning in my car. This is what happened: as I was sitting at a red light and my car was idling, a warning suddenly flashed stating that the transmission would only shift from Reverse into 1st and 2nd gear. Sure enough, when I started driving those two gears were the only ones that I could use to drive. After buying some transmission fluid, I added it. My car drove okay for a day, but then it went out again. In your expert experience, what should I do to fix this problem?

Hello. I would need to check the transmission fluid condition to tell you for sure what is going on. If the fluid is dark or smells burnt then it more than likely needs a transmission. I usually scan the computer for codes also to see what the computer is seeing.

If it is simply an electrical issue or a sensor issue, then it may have a code to give direction on where to start. Most of the time, when I see this occur it is because one of the clutch packs is worn out causing a slipping issue. If you want to have this looked at, consider YourMechanic, as a certified mechanic can come to your home or office to diagnose the shifting problem and help you have this repaired.

Was this answer helpful?
The statements expressed above are only for informational purposes and should be independently verified. Please see our terms of service for more details
  1. Home
  2. Questions
  3. 2005 BMW 645Ci only shifts and drives in 1st and 2nd gears

Get an instant quote for your car

Our certified mechanics come to you ・Backed by 12-month, 12,000-mile guarantee・Fair and transparent pricing

Get a quote

What others are asking

Q: Q: Hard shifting when engine warms up

Hello there, many different things that can cause the transmission to shift hard. The most common causes include: low fluid level, shift solenoids, torque converter, or the transmission linkage. If you decide to get this fixed, consider enlisting a qualified...

Q: Q: White smoke coming from tailpipe

Hi! The white smoke is a sign that the engines head gasket has blown and is leaking coolant into the combustion chamber. The coolant leaked into the hot combustion chamber then burns off in the form of white smoke exiting...

Q: Q: Car leaking transmission fluid

Transmission leaks can become very expensive if not addressed quickly. The fluid acts as a lubricant and cooling fluid, so if it's missing, heat in the form of friction can cause catastrophic failure. Possible points of leakage include the transmission...

Related articles

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...
P0052 OBD-II Trouble Code: HO2S Heater Control Circuit High (Bank 2 Sensor 1)
P0052 code definition HO2S Heater Control Circuit High (Bank 2 Sensor 1) What the...
How to Avoid Back Pain in a Car
If you have back problems, sitting in a car for an extended period of time can be excruciating. Even without back problems, you could experience discomfort and soreness from...