Hesitation issues when idrive is shifting from 2nd to 3rd on acceleration & deccelatation

DONNA0603

MEMBER
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?

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

7 Replies

JACOBANDNICKOLAS

MECHANIC
108,328 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

DONNA0603

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4 POSTS

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

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Wednesday, April 11th, 2012 AT 9:21 PM

JACOBANDNICKOLAS

MECHANIC
108,328 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

DONNA0603

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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

JACOBANDNICKOLAS