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ABS and Unable to Manually Shift Tiptronic after Smog Test

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I just had my car Smog Tested (Passed) however I am now unable to manually shift the gears.

Also, the ABS light comes on for a brief moment when I start the car. The mechanic told me the ABS light will disappear completely after driving the car for 28 or so miles. He was unaware about my inability to manually shift.

Has anyone else experienced this problem?


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Thanks for your reply.

During the day (<10 miles driven) my ABS light went out to a normal condition.

Later in the afternoon, after my ABS light went out, ...I was able to manually select gears via Tiptronic switch levers. That one surprised me for sure as I was NOT expecting that to happen at all.

Edited by rprieto
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Do they smog test it on rollers? Two wheel or four wheel? My Mecedes C230 has a wierd ABS problem, where if the front tires weren't spinning within a certain percentage of the rear wheel speed, or vice versa, you couldn't put the cruise on, and the ABS would trigger, like the car thought it was sliding on ice. Does your car have the stability equipment? PSM? Is there anything in the owners manual about dyno testing?

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With a 1997 that I have owned for 11 years I am sort of a smog expert.

CARB has taken over this state.

I do get fault codes because the rear wheels spin on the rollers, and the fronts do not. ABS does not like that.

But this has nothing to do with emission fault codes. I have a 5 speed manual transmission so I do not see tip fault codes.

post-4-030266900 1286332947_thumb.jpg

post-4-002339600 1286333037_thumb.jpg

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