HESITATION ISSUES WHEN IDRIVE IS SHIFTING FROM 2ND TO 3RD ON ACCELERATION & DECCELATATION

  • Tiny
  • donna0603
  • 2004 BMW 545i
  • 110,000 miles

Noticed first on acceleration there would be a hesitation when shifting from 2nd to 3rd and when deceleration it shifts very hard from 3rd to 2nd. When I use the manual shifting there are no problems. Does anyone know what the problem might be?

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Wednesday, April 11th, 2012 AT 6:58 PM

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  • Tiny
  • Jacobandnickolas
  • Expert
  • 68,409 posts

It sounds like it may be with the TCM (transmission control module). Have the computer scanned to see if there are any trouble codes. Most parts stores will do it for free.

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Wednesday, April 11th, 2012 AT 8:42 PM
  • Tiny
  • donna0603
  • Member

So far there have been no codes. I have a OBD tester.

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Wednesday, April 11th, 2012 AT 9:21 PM
  • Tiny
  • Jacobandnickolas
  • Expert
  • 68,409 posts

Is your OBD tester able to read codes other than engine codes? The ones to read all codes, trans, ABS. Are very expensive and most people don't purchase them.

Let me know.

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Wednesday, April 11th, 2012 AT 9:25 PM
  • Tiny
  • donna0603
  • Member

My tester is only able to read codes for the engine. I will take it to an Auto Zone tomorrow. I'll get back with you when I have the test ran and tell you what the results show. Thank you very much.

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Wednesday, April 11th, 2012 AT 11:35 PM
  • Tiny
  • Jacobandnickolas
  • Expert
  • 68,409 posts

Keep in mind, most of the parts stores may not have the right scanner either.

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Thursday, April 12th, 2012 AT 12:34 AM
  • Tiny
  • donna0603
  • Member

What should I ask for to make sure their scanner is the right one?

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Thursday, April 12th, 2012 AT 3:01 PM
  • Tiny
  • Dr. Hagerty
  • Expert
  • 9,720 posts

The issue is very possibly software related.

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Sunday, October 21st, 2012 AT 1:49 AM

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