E65 730i ABS nightmare

[billyg05]

I'm  having trouble with my ABS its has a bosh 5.7 module.problem started about 4 mounths ago, after about 13 miles all the lights came on. A quick test showed a fault for osf w/speed. put a w/speed sensor in and no more 13 mile grace. Blocked out the module and found no out-put to osf. Sent module for repair. told irreparable by ACTRONICS. bought a complete mod and hyd/block (used) from quarry motors, £200. the same bosh number but different bmw number. just fitted electrics and it would not communicate at all, ista/d or ista/p.I also took it to a back street guy who specialises in bmw programming/coding. no good!

bough a module on ebay from usa. same bosh no. same bmw no. Shipping/import duty £105 all in. it had a permanent fault for o/s/r wheel speed.

bough another mod/hyd unit of ebay, same bosh no. same bmw no. £141. it also had a load permanent faults.

ebay refunded me for the usa module. so i sent that module to ACTRONICS. £205 later they say its was sorted.

when i plunged in that module i also lost steering/suspension/odometer. tried clearing down fault codes and was looking good. It lit up before i got to the main road. lots of communication faults to other the modules.I sent it back to ACtronics. They say module is ok.

At the moment, running original module. Just break problems now. it was awful when the steering/suspenion/spedo were also down.

I'm having a break from this problem now. not a nervous break down. but not far off.

any advise would be appreciated

[Greydog]

What a saga

Never heard of Actronics I have however used ECU Testing and BBA REMAN with excellent results on Volvo, Mercedes and BMW

Have you checked (or had someone check) the loom for continuity? Hate to have you go through the pain and discover its a break causing intermittent issues

Dave

[billyg05]

when the w/p/sonsor didnt fix it. i blocked out the module. three of the sensors had the same voltage. no voltage to o/s/f. in fairness i should have disconnected the sensor side of the block to comfirm there wasn't a short. the module in beside the o/s/f and the sensor is new and looks good. a later module showed a fault for o/s/r. That's the mod that actronics said was repaired. and are saying its ok. in fairness the o/s/r fault cleared down with the rest of the fault list but as soon as it got moving it light up. the other controll units could not communicate with the abs mod. ip-so facto! the fault has to be in the abs mod?? I'm begging to bought myself.

do you thing there could be any reason a module on a bmw in the us is different to a module fitted in the uk. same Bosh number, same BMW number, similar model it came from a 730d mine is a 730i both e65.

this is the us module. and the next pic is of how it was shipped. raped in a piece of paper

[billyg05]

i  think these modules are fragile. maybe they have an accelerator chip that decides after this much of an impact the car must be significantly damaged. self destruction so the module can not be reused??

11 minutes ago, billyg05 said:

when the w/p/sonsor didnt fix it. i blocked out the module. three of the sensors had the same voltage. no voltage to o/s/f. in fairness i should have disconnected the sensor side of the block to comfirm there wasn't a short. the module in beside the o/s/f and the sensor is new and looks good. a later module showed a fault for o/s/r. That's the mod that actronics said was repaired. and are saying its ok. in fairness the o/s/r fault cleared down with the rest of the fault list but as soon as it got moving it light up. the other controll units could not communicate with the abs mod. ip-so facto! the fault has to be in the abs mod?? I'm begging to bought myself.

do you thing there could be any reason a module on a bmw in the us is different to a module fitted in the uk. same Bosh number, same BMW number, similar model it came from a 730d mine is a 730i both e65.

this is the us module. and the next pic is of how it was shipped. raped in a piece of paper

 

[billyg05]

4 hours ago, Greydog said:

What a saga

Never heard of Actronics I have however used ECU Testing and BBA REMAN with excellent results on Volvo, Mercedes and BMW

Have you checked (or had someone check) the loom for continuity? Hate to have you go through the pain and discover its a break causing intermittent issues

Dave

I've had a look at ECU Testing and BBA REMAN web site. looks professional. i'll give them a call on monday. thanks for the tip 

[billyg05]

this is what my oem module that actronics said had a permanent fault is saying now. it started with a fault for o/s/f w/s/s no signal.

[Greydog]

Morning Bill

I would only work with BMW part numbers personally I have fallen foul of manufacturer part numbers with my X5 one of my AMG's and several Volvo's where the ABS units failed often due to dry joint issues.

Not trying to teach Granny to suck eggs but have you checked www.realoem.com for the BMW part numbers ? You will be able to check right and left hand drive models plus if you click on the part number you will see what if any other models used the part, plus what alternatives if any are available. Then google the BMW part number.

Also remember certain models have to have the part registered to the chassis or they are not recognized??? Remember years back when BMW boasted  the 7 series had more computing power than the Space Shuttle (or something like that) Well soon you will be a fully fledged Space shuttle mechanic 🤣🤣

Dave

 

[billyg05]

I'm going to refit the old w/s/sensor where all this started. even though i can read live data for all w/s/sensors and it looks. 

[billyg05]

Cheers for the tip about realoem.com. looks like a good resource. they don't list my abs module though.

anyway. put the old w/s/sensor back on with the old oem module that actronics said they couldnt fix. and guess what? YES! it's all working like new. i can only imagine that there was a fault in the mod then i compounded the the problem with this dodgy w/s/sensor. it must wired in reverse?? fingers crossed, Done 30 miles today, all good. 'maXgear'! should have gussed from the name. i feel a bit foolish.  Thanks for your help anyway

+ Show shipping details

ABS Wheel Speed Sensor For BMW:E65 E66 E67,7 34526761650 34526771708 34526761800

Item price	£33.79
Quantity	1
Item number	174244238586
Delivery service	Other courier (3 to 5 days)

[Greydog]

A pleasure Bill

Glad it is working now, fingers crossed it behaves it's self from now on.

The other Web sites I use are www.newtis.info This one is a BMW technical information site the Dealer network use this information. I also use www.pelicanparts.com an American site so steering wheels on the wrong side but great "how to's" with pictures.

Heres your ABS unit

         They call it the HydroUnit DSC Control Unit Part 1. 34516855553 Control Part 2. 34522284921

It also appears you have a DSC compressor that also has a speed sensor 

     

 

Enjoy your 7 series

Dave

[billyg05]

Thanks again Dave, you seem like a pretty resourceful guy. i work for a bmw dealer. still on furlough at the moment. but if there's any info you can't find. give me a shout and i'll see what i can do.  

[Greydog]

Top Man

Dave