Mini Cooper '05 ( 5 or 6 gears) Transmission Failure Conondrum - MINI Cooper Forum

First Generation CVT & Automatic First Generation MINI Automatics from 2001 - 2006

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post #1 of 4 (permalink) Old Jul 12th, 2014, 07:39 AM Thread Starter
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United-Kingdom Mini Cooper '05 ( 5 or 6 gears) Transmission Failure Conondrum

Hello Forum,

I have a Mini Cooper 2005 Automatic; the gearbox starting being funny;

Initially the revs were going too high while changing from 1st to 2nd gear.

I disconnected the battery hoping it was an ECu issue. It worked for a while (rev were now too low when changing).

I noted that when changing from Park to Drive the gearbox had a small lag of about half second to engage with a little bump.

Later on ..the problem begun: The gear would not change from above 1 at all..

A diagnostic unveiled the following messages codes:

1787 gearbox ratio actuator open circuit.
698 gearbox control unit
EGS no communication
ABS no communication

Does this points to the transmission slipping inside and requiring the sheave and chain replacing ?

I am not familiar with error codes, but it does not look like there is a clear indication of mechanical part broken inside the gearbox?

-I am worried I will have to pay for an expensive gearbox dismount when in reality it's an electrical issue only (cables perhaps?)

-On the other hand I am worried that the mechanical repair does not solve the issue and I get dragged in endless repairs involving Ecus.

-Although in good conditions (1 previous owner only, all paper work perfect etc.) my mini is 115 k miles, so thinking whether I should repair it all and find alternative solutions.

-A garage said I am mad and I will waste 2k if I sell the car as it is now since anyone could just repair it and sell it for 4k. However I only have my mini which is essential to go to work and I am not sure whether I have enough skills and time to go all the way to repair it and sell it later on..

Thank you very much anyone could help and advise whether the logs do actually points at mechanical failure / advise what to do next..???

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post #2 of 4 (permalink) Old Jul 12th, 2014, 08:26 AM
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Is it a CVT or a true automatic (I can never remember the year they switched to automatics)? When the CVT's suffer a mechanical failure it usually happens pretty suddenly and involves a total failure. Sounds like you have something else going on.

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post #3 of 4 (permalink) Old Jul 12th, 2014, 09:59 AM Thread Starter
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Thank you for your reply Sejanus,

It is not a CVT transmission, it is a 5 or 6 gear gearbox. I am not sure but it should be "Midlands" transmission...
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post #4 of 4 (permalink) Old Jul 12th, 2014, 12:41 PM
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The 2005 MINI Coopers had either the 5-speed manual Getrag or the CVT (GACVT16Z) automatic transmission.
Before 7/2004, the manual transmission was the Midlands.

If you have a MINI Cooper S, then it's the Aisin (GA6F21WA) 6 speed automatic transmission
(which is much sturdier and more reliable than the CVT in the R50).

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