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Old 13-10-2017, 01:09 PM   #1
Olive
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Default Default Code 35

Hi,
Last week end I was driving on mountain road, quite quickly, and, after had reduced speed (5 minutes before), the gearbox turned to neutral (with the small orange wheel on the dashboard). I stoped the car, swithed off the engine, and switched on. No more trouble.

I came back at home (1 minute away) and checked with Reihngold. A code 35 was in memory => pressure loss in hydrolic system (hydraulic pressure sensor evaluation)

I launched a full gearbox adaptation and everything goes well. No pressure trouble, all the gears are OK, nothing to signal...

Does somebody knows something about this fault ?
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Old 13-10-2017, 02:56 PM   #2
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Quote:
Originally Posted by Olive View Post
Hi,
Last week end I was driving on mountain road, quite quickly, and, after had reduced speed (5 minutes before), the gearbox turned to neutral (with the small orange wheel on the dashboard). I stoped the car, swithed off the engine, and switched on. No more trouble.

I came back at home (1 minute away) and checked with Reihngold. A code 35 was in memory => pressure loss in hydrolic system (hydraulic pressure sensor evaluation)

I launched a full gearbox adaptation and everything goes well. No pressure trouble, all the gears are OK, nothing to signal...

Does somebody knows something about this fault ?
hi olive Could be just nothing, Possible pink relay,which switches voltage for pump have been known to fail, 20 euro worth a punt, Or wait to see if If happens again hopefully nothing .
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Old 13-10-2017, 03:32 PM   #3
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hi olive Could be just nothing, Possible pink relay,which switches voltage for pump have been known to fail, 20 euro worth a punt, Or wait to see if If happens again hopefully nothing .
I clearly hope to not see this light again

I though about the pink relay. I think I will have to buy one and keep it somewhere inside the car just in case.

Maybe also the sensor really played his role because I was driving mainly in 2nd gear and rather high RPM (not easy to go in 3rd in tinny mountain road) => it is possible to have reach a too high temperature level.

May be, and hopefully, I will never know
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Old 13-10-2017, 04:06 PM   #4
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I had the same symptoms once. I had a spare salmon relay in the glove box. Changed it on the side of the road and all was good.
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Old 13-10-2017, 08:00 PM   #5
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Does anyone have part number and where it can be purchased from, my box played up earlier in the year so could do with carrying a spare.
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Old 13-10-2017, 08:57 PM   #6
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Quote:
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Does anyone have part number and where it can be purchased from, my box played up earlier in the year so could do with carrying a spare.
Think it's 12631742690. Always worth having a spare, contacts on 12 volt side to pump supply can get a bit burnt I guess. Or they just fail on switch. Thought everyone had these as a spare.

Last edited by Chad; 13-10-2017 at 09:00 PM.
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Old 14-10-2017, 03:19 AM   #7
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Have you done a pressure or leak down test on the SMG hydro unit? That would be worth checking.
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Old 14-10-2017, 06:52 AM   #8
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Yes, just after.
Pressure level was very fine and full test shown no error nowhere. Has nothing happened

Concerning relay : bought ! http://www.ebay.fr/itm/BMW-NEW-GENUI...AAAOSwynRZv6tF
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Old 18-10-2017, 01:33 PM   #9
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Just a friendly heads up Olive, if you buy this relais from BMW its cheaper.
It only costs 10€ without tax. So this ebay ad is a bit of a rip off to be honest.
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Old 18-10-2017, 03:42 PM   #10
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Hi, thanks for the warning
I paid this price, anyway, due to my job hours I cannot go to the BMW dealer between 8AM and 5PM.
I will say that I am paying to be delivered

P.S : Next time I will ask first !
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