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Diagnostic Help


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I have a '99 tiptronic. I was driving normal in auto mode and the light indicated I was in the 4th gear. I punched the gas trying to get into the next lane. It felt like it was down-shifting but the RPM went up to 6500 and stayed for about 2 seconds the shifted into a gear. I don't know which gear it was but the transmission light flashed alternately back and forth between 4 and M. The drive was still driveable but pickup speed was very slow. I stop the car. Turned off the engine then start the car again. It ran normal after that. I tested the car again and experienced the same problem. This happened before but I thought it was me switching between auto and manual. Has any one has this problem? What should I do?

TIA

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Hi,

'99 TipS here too. I hate to be the one to tell you, but the indicators flashing between '4th' and 'M' are a fault indicator. This Fault Indicator has initiated the Emergency Program in the Transmission Control Unit. Straight from the

Owners Manual -

" If there is a fault in the Transmission or the Control Unit, the 4th-gear and Selector Lever Position display Flash altenately. To remedy the Fault, immediately consult an authorised Porsche Dealer. See also Emergency Program"

Emergency Program

" If there is a fault in the Transmission or the Control Unit, the 4th-gear display and Selector Lever display in the Instrument Cluster Flash alternately. Regardless of Selector Position, 4th is the only Forward Gear still available. Adapt your driving habits to the changed situation and bring your car to an Authorised Porsche Dealer for repairs.

CAUTION

Reverse Gear Lock Monitoring is disabled in the Emergency Running Program. Do Not select position 'R' while driving in a Forward direction.

WARNING

Do Not shift into 'R' while the vehicle is moving forward. Damage to the vehicle may result as well as a loss of control, if the vehicle is moving forward fast enough to cause rear wheel lock-up."

Hope this helps.

Happy Motoring!... Jim'99

Edited by MNBoxster
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  • 6 months later...
Hi,

'99 TipS here too. I hate to be the one to tell you, but the indicators flashing between '4th' and 'M' are a fault indicator. This Fault Indicator has initiated the Emergency Program in the Transmission Control Unit. Straight from the

Owners Manual -

" If there is a fault in the Transmission or the Control Unit, the 4th-gear and Selector Lever Position display Flash altenately. To remedy the Fault, immediately consult an authorised Porsche Dealer. See also Emergency Program"

Emergency Program

" If there is a fault in the Transmission or the Control Unit, the 4th-gear display and Selector Lever display in the Instrument Cluster Flash alternately. Regardless of Selector Position, 4th is the only Forward Gear still available. Adapt your driving habits to the changed situation and bring your car to an Authorised Porsche Dealer for repairs.

CAUTION

Reverse Gear Lock Monitoring is disabled in the Emergency Running Program. Do Not select position 'R' while driving in a Forward direction.

WARNING

Do Not shift into 'R' while the vehicle is moving forward. Damage to the vehicle may result as well as a loss of control, if the vehicle is moving forward fast enough to cause rear wheel lock-up."

Hope this helps.

Happy Motoring!... Jim'99

Thank you so much for the info. I'v just read this message. Thanks once again.

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