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7 Series - E38 (1995 - 2001)

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  #1  
Old 11-30-2014, 05:25 PM
Thrills Thrills is offline
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transmission failsafe warning

Please help... this warning came on and the car is very sluggish. Does this mean my tranny has let go? My transmission was serviced 6 months ago. Any advice would be welcomed and appreciated.
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  #2  
Old 11-30-2014, 06:52 PM
roboe60 roboe60 is online now
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How old is your battery? A common cause of the transmission failsafe warning is a battery on its last leg. Have it checked at your local parts store, if you do not have a multi-meter.
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  #3  
Old 12-01-2014, 06:27 PM
Mavrick65 Mavrick65 is offline
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trani 1998 bmw

My has the same problem i scanned and it say 03 solenid valve 5 locked on reverse gear ,help any one please.
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  #4  
Old 12-01-2014, 06:30 PM
Thrills Thrills is offline
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Could it be the alternator?
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  #5  
Old 12-01-2014, 06:41 PM
Mavrick65 Mavrick65 is offline
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ok i will cheak thanks
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  #6  
Old 12-01-2014, 07:22 PM
sealbeach740 sealbeach740 is offline
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Quote:
Originally Posted by Thrills View Post
Could it be the alternator?
Thrills - if you're talking about your car (alternator), usually if the alternator isn't putting enough voltage out to the battery, you'll get the red battery light to light up on your cluster.
This could be because of a bad/dying alternator, or possibly a loose or very badly worn belt.
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2003 540iS. MKIV, 16x9, PDC, CWP, TV tuner, backup camera with 'on demand' switch, paddle shifters, windows/sunroof close via remote, iPod video & audio.
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  #7  
Old 12-01-2014, 07:35 PM
Thrills Thrills is offline
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I recently bought a new battery and it only registers 65%. and the guy at AutoZone thinks it could be effecting the tranny. I don't know how but...there was fluid on the ground under my car and it runs very sluggish. So I may need an alternator but just curious about tge failsafe warning.
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  #8  
Old 12-01-2014, 07:42 PM
Mavrick65 Mavrick65 is offline
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I dont have the battery light red, when i put on reverse the trani jerks hard once.
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  #9  
Old 12-01-2014, 07:55 PM
Mavrick65 Mavrick65 is offline
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im going to cheak the alternator and battery frist

Last edited by Mavrick65; 12-01-2014 at 08:03 PM.
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  #10  
Old 12-01-2014, 08:01 PM
Mavrick65 Mavrick65 is offline
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The fluid on the ground thats not good i think alternator or battery do they have something to do with that not so sure.
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  #11  
Old 12-01-2014, 08:37 PM
Mavrick65 Mavrick65 is offline
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Just cheaked the alternator and battery they good so is none of that.
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  #12  
Old 12-02-2014, 08:04 AM
Thrills Thrills is offline
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Sending her out to my mechanic to see what the problem is.
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  #13  
Old 12-02-2014, 01:17 PM
Mavrick65 Mavrick65 is offline
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Good luck let me know the outcome.s
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  #14  
Old 12-03-2014, 04:23 AM
GMCPaul GMCPaul is offline
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Quote:
Originally Posted by Mavrick65 View Post
My has the same problem i scanned and it say 03 solenid valve 5 locked on reverse gear ,help any one please.
If the scan came up with a faulty #3 transmission solenoid I would think that you would be looking to either determine if the harness supplying the valve is damaged or if the valve has gone bad & needs replaced.
Pressure valve went out on the 2001 750 and when it went we had a STRONG reverse and extremely weak drive gear with transmission fail safe warning.
When I scanned the car it showed the pressure valve #1 valve was at fault. We checked harness and it was good so I snatched up a extra valve body with solenoids attached & harness off ebay for $150.00, grabbed a valve body rebuild kit for another $125.00 and rebuilt the ebay valve body as future preventive maintenance, installed freshly rebuilt valve body into the 2001 and problem solved. I've since replaced the bad pressure valve and rebuilt the old 2001 valve body and will be swapping it into the next car that needs it here.

So test your #3 valve body solenoid & harness to determine if they are bad and go from there.
Paul
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1995 750iL Diamond Black / SandBiege,
1997 750iL Navarra Violet Metallic / Gray W/ AC Schnitzer Body Package & M-Par ,
1998 750il Black/Black,
2000 750iL Titanium Silver / Gray Chrome Line W/Chrome M-Pars,
2001 750iL Titanium Silver / Gray Chrome Line W/Style 61's,
1993 325i Blue/Gray Ext. Beige Int.
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  #15  
Old 12-03-2014, 04:38 AM
GMCPaul GMCPaul is offline
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Quote:
Originally Posted by Thrills View Post
I recently bought a new battery and it only registers 65%. and the guy at AutoZone thinks it could be effecting the tranny. I don't know how but...there was fluid on the ground under my car and it runs very sluggish. So I may need an alternator but just curious about tge failsafe warning.
Those that get the Trans Fail Safe warning caused from a low battery is because the E38 is designed with electrical modules that each have a different level of battery voltage needed to perform correctly, if the voltage level drops below its requirement then that module drops off line causing problems with whatever that module controls. The transmission module requires almost full battery voltage so when batteries become weak due to a bad alternator or bad battery then the transmission module is the first major module affected causing it to go off line resulting in Trans Fail Safe message.
If your battery tested at only 65% and after applying a charge will not hold full voltage replace the battery, if it holds a charge after charging and not using the car then suspect the alternator and get it tested.
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1995 750iL Diamond Black / SandBiege,
1997 750iL Navarra Violet Metallic / Gray W/ AC Schnitzer Body Package & M-Par ,
1998 750il Black/Black,
2000 750iL Titanium Silver / Gray Chrome Line W/Chrome M-Pars,
2001 750iL Titanium Silver / Gray Chrome Line W/Style 61's,
1993 325i Blue/Gray Ext. Beige Int.
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  #16  
Old 12-03-2014, 07:15 AM
Mavrick65 Mavrick65 is offline
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Thanks for the post i never work on trani how dificult is to change the solenoid do i need to open the trani or what steps need to be taken if you can you give some idea thank you.
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  #17  
Old 12-03-2014, 07:48 AM
GMCPaul GMCPaul is offline
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The valve body with attached solenoids is located on the bottom of the transmission accessed by removal of the oil pan & filter. All my work has been on the 750 which uses the 5hp30, the only 740's that received the 5hp30 were the 1995 model year, so since you have a 98 740 you'll have a 5hp24 transmission which I'm not familiar with other than knowing some of its weak points.
So I'd suggest googling 5hp24 valve body, then look for detailed instructions on testing solenoids, rebuilding, etc... to familiarize yourself with it and try to help isolate the problem. Heres a link to ZF site with the 5hp24 parts catalog
http://www.zf.com/media/media/docume...sa_4/5HP24.pdf
Heres another link to the Technical diagnostic guide for troubleshooting and repair of the ZF5hp24 found in your car.
http://virtusplatform.com/sam/BMW/e3...P24%20diag.pdf
A quick google can yield far more including videos, anuals, etc....
Paul
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1995 750iL Diamond Black / SandBiege,
1997 750iL Navarra Violet Metallic / Gray W/ AC Schnitzer Body Package & M-Par ,
1998 750il Black/Black,
2000 750iL Titanium Silver / Gray Chrome Line W/Chrome M-Pars,
2001 750iL Titanium Silver / Gray Chrome Line W/Style 61's,
1993 325i Blue/Gray Ext. Beige Int.
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  #18  
Old 12-09-2014, 10:04 PM
Mavrick65 Mavrick65 is offline
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Mein Auto: 1998 bmw 740i
transmition solenoid 03

where ere those solenoid located inside trani if i remove the pan can i sse it?
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  #19  
Old 12-10-2014, 02:13 AM
GMCPaul GMCPaul is offline
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Quote:
Originally Posted by Mavrick65 View Post
where ere those solenoid located inside trani if i remove the pan can i sse it?
Maverik65 if you would take just a second to look at the 2 links I provided you your questions will be answered.
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1995 750iL Diamond Black / SandBiege,
1997 750iL Navarra Violet Metallic / Gray W/ AC Schnitzer Body Package & M-Par ,
1998 750il Black/Black,
2000 750iL Titanium Silver / Gray Chrome Line W/Chrome M-Pars,
2001 750iL Titanium Silver / Gray Chrome Line W/Style 61's,
1993 325i Blue/Gray Ext. Beige Int.
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  #20  
Old 12-10-2014, 07:13 AM
Mavrick65 Mavrick65 is offline
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Location: Ca
 
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I have hard time open those files my computer dosnt like it somethings wiyh my settings i will try to change that or view from another thank you for those links appreciate very much.
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