2007 750i will reverse but not drive. Please help. - Bimmerfest - BMW Forums



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7 Series - E65 / E66 (2002 - 2008)
Discussion of BMW's 4th generation E65/E66 7 Series flagship. The E65 generated much controversy, due to its radical styling and iDrive user difficulties. Nonetheless, the E65 broke records to become the best-selling 7-series iteration ever, especially after its 2005 facelift.

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  #1  
Old 10-15-2019, 06:08 PM
dlb26666 dlb26666 is offline
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2007 750i will reverse but not drive. Please help.

Can someone please help? I have a 2007 750i. The car has 107k miles. I bought it at an auction and drove home no problem. Almost 2 months later, the car started shifting rough then "TRANSMISSION FAULT, DRIVE MODERATELY" message with YELLOW GEAR on the display. When coming to a stop, the car would stop then move forward again until a full stop. Then, taking off, it's like I had to "baby the gas pedal" for it to shift gears. Once on the highway, no problem.

Now, the vehicle has to warm up and when it does, it wont stay in gear. Eventually (after a few more minutes) the shiftier does engage in reverse and will move. When I shift to drive it drops back to to park but it wont engage in drive.

I took it to the local BMW Dealer about 2 weeks before all this and had diagnostics ran. Please bear with me because it's a laundry list of codes (see Attachments).


Please help! I'm looking for the best way to go on the repair without getting "hosed" Thanks all. I really could use your suggestions and appreciate your help. Thanks.
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  #2  
Old 10-15-2019, 06:45 PM
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csmeance csmeance is offline
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look like a bad battery coupled with probably a leaking transmission. Change the fluid, seals and filter/pan.
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Old 10-17-2019, 07:24 AM
mathat mathat is offline
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did it really cost 1000 for a new water pump - was it actually broken or was it just a faulty thermostat ?
anyway +1 on csmeance , your gearbox needs more fluid , you might as well service it while you are there to stop the leaks (the oil can get into the electrics hence changing the seal)
would have thought they would have told you this - since they have taken all your money !
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Old 10-17-2019, 11:46 AM
dlb26666 dlb26666 is offline
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Thanks for your response. No they wanted to charge me that much for the thermostat I told him now that's okay I don't think that's what the problem was initially and then when I asked for the cheat codes they acted as if they didn't even want to give them to me and so that's when I knew that there was a problem going to that dealership. So now I'm looking at going to a shop that specifically works on Mercedes and BMWs and they're pretty good they worked on my 98 750 some time ago. be
I just wanted to get a pretty good idea what I'm looking at because I don't want to be faced with the shop telling me that I'm going to need a new transmission when I really don't. I've been hearing that in cases like this maybe it'd be good to change out the transmission filter and also check the "mechtronics"? Any ideas on that? Thanks

Also what might I be looking at as far as price for repair? I really do appreciate as much input as possible.
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Old 10-17-2019, 07:05 PM
dlb26666 dlb26666 is offline
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Any one else solved an issue similar to this? Can some PLEASE HELP! What do some of these codes mean? Yes, I'm a Noob
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  #6  
Old 10-18-2019, 02:09 AM
mathat mathat is offline
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In my opinion don't worry about the codes - most will be from low battery or when the power dipped when starting (my car is full of them but all works fine) , look up gearbox oil change and then get then to do that and the the little parts - if your gearbox worked fine before there would be no point in going to far into the gearbox but get all the main parts done as they are small cost parts (1 seal +5 rubber bits and a filter + 7 liters of expensive oil), get the codes cleared and make sure the car gets to temperature and then see what problems still exist.
I am not sure what codes you have could be important maybe someone else will know if they are important
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Old 10-18-2019, 08:12 PM
dlb26666 dlb26666 is offline
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Thanks for your reply I really appreciate the help. I spoke to a local shop that's worked on my cars in the past. They told me to bring it in a they'll run their own codes to see what the problem is. Question: should I go ahead and order the transmission filter kit and have them replace that too? I am new at this and read as many post as I could. This type of problem comes up and suggestion is to replace trans filter as it could be leaking but you don't see fluid on the ground. Do you think that may help since I might suggest the other possible solution (Gear Box)? Thanks.
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Old 10-21-2019, 08:08 PM
dlb26666 dlb26666 is offline
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2007 750i

Well, I had the Car towed today to the shop. Hope it's not a new transmission. I'll keep you posted...
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  #9  
Old 10-21-2019, 08:21 PM
TxGr8White TxGr8White is offline
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Most of the time it is old bridge seal and the 4 sealing tubes to the valvebody. Also, if your fluid level is off or the mechatronic sleeve is leaking, you will experience this behavior. Rarely will it require a new transmission (these are pretty robust). Been there, done that.
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Last edited by TxGr8White; 10-21-2019 at 08:23 PM.
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