BMW Common ABS Pump (ESP Fault) – Brake Pressure Sender / Sensor Switch Failure
You might have heard about the common BMW Brake Pressure Sensor fault, which is a fault within the ABS Pumps’ ESP system or even, you may be experiencing this type of fault with your own unit. The Brake Pressure Sensor (ESP fault) is not restricted to just BMW’s, in fact we are seeing customers especially from the VAG group (Volkswagen, Audi, Seat & Skoda) and also customers with Mazda’s and Ford cars.
If you own a BMW you will notice that you don’t actually have an ESP button or ESP light on your dash (instrument cluster), you’ll have a DSC or ACS light which will stay on. DSC stands for “Dynamic Stability Control” but retains the same functionality of ESP.
What is DSC & Why Do I Need It?
The DSC (Dynamic Stability Control) system is an additional function to the commonly known ABS (Anti-Lock Braking System) & TCS (Traction Control System). Many 2000+ BMW’s are fitted with the DSC system. ABS prevents the wheels locking up under harsh braking / emergency braking, TCS will prevent the wheels from spinning when accelerating hard. DSC is much more advanced and is constantly working, calculating every corner you take to ensure you’re safety. The DSC system will use accelerometer sensors around the vehicle, to detect when the vehicle is likely to loose traction whilst cornering or sudden turning to avoid a collision at speed. If there is excessive longitudal or lateral acceleration/deceleration it will be detected & by sudden steering at speed, the DSC system will instantly apply the brake to one of the opposing wheels, preventing excessive lateral movement that causes loss of traction to the road and loss of driver control of the vehicle.
How To Know If You Have The BMW ESP/DSC Fault “Brake Pressure Sensor”
If you have got this fault with your car then you’ll notice that the DSC / ACS light will stay on and pressing the DSC / ACS button will have no effect. Common to BMW’s you may also hear the double-tone alarm when you turn the ignition on, this is the on-board computer system advising you that there is a fault with the system.
When plugging a diagnostics machine or even a small code reader that will read ABS fault codes, you will see the fault code & description as follows:
“5E20 – HYDRAULIC PRESSURE SENSOR INTERNAL”
This is referring to the Brake Pressure Sensor inside the ABS pump and unfortunately cannot be purchased as a separate part, you are required to purchase a complete new unit direct from BMW at a cost of £1700.00+ (+vat, programming & labour). We can supply these units at a fraction of the cost and guarantee NO Programming will be required.. that’s right – PLUG & PLAY!
Most Common BMW’s Affected
BMW 1 series 2004-2006
BMW 3 series 2000-2002
BMW M3 2002-2006
BMW MINI 2003-2006
BMW Z4 1999-2002
Common BMW ABS Pump Part Numbers Affected
3451-6765282-01
3451-2282250-01
3451-6750364-01
3451-6759045-01
3451-6765452-01
3451-6769778-01
3451-6769844-01
3451-6771486-01
3451-6772213-01
3451-6775055-01
3451-6776055-01
3451-6778163-01
3451.6759073-01
3452-2282249-01
3452-6753842-01
3452-6759047-01
3452-6759075-01
3452-6765284-01
3452-6765454-01
3452-6769779-01
3452-6769845-01
3452-6771487-01
3452-6772214-01
3452-6776056-01
3452-6778164-01
*This is just a list of the common part numbers affected.
Why You Should Choose Sinspeed To Replace / Remanufacture Your ABS unit
The ABS pump will have failed due to a manufacturing defect and replacing it with a new unit or even a second hand one does not necessarily prevent this from happening again. In fact, if you was to replace it with a working second hand unit, then you will be waiting for the day for it to fail because they are all failing at one point or another. The problem is with the Internal Brake Pressure Sender Sensor Switch. Once this fails, the DSC system is no longer working. There are other companies that will simply replace this part and return it to you, but that will not prevent it from happening again in the future.
Quiet recently some dealers have brought out “Repair Kits” for this fault but again, it’s simply to repair the existing part by replacing the sensor with a like-for-like part.. it is in no way superseded and will carry the same design fault.
What we do is completely different. We bypass the original Brake Pressure Sensor Switch and fit our very own custom manufactured External Brake Pressure Sender Switch and calibrate it so that the manufacturing defect is no longer existing. This is the only way to completely remove all risks of the unit failing again and this is why we are confident enough to offer a full LIFETIME warranty on the unit.
Why Modify The Unit? – Why Not Just Replace The Damaged Part?
All other cars without the MK60 ATE ABS Control Module have the Brake Pressure Sensor fitted externally to the ABS Pump and guess what, they never fail!
Having the Brake Pressure Sender Sensor Switch fitted internally to the ABS Pump is a new space-saving idea which has gone terribly wrong and unfortunately dealerships are yet to recover from this outbreak of faulty units as they have not yet released a modification. Replacing the internal switch for another one will not permanently cure the problem as it will remain a manufacturing defective unit. In order to safe-guard the future of your ABS unit, you have to modify it to match it’s predecessors. All the older versions of the ABS units come without internal brake pressure switches and the DSC never failed because the switches were mounted externally. If something isn’t broken.. why try to fix it? The external switches were great and never failed, the internal brake pressure switch was a bad idea from the start.
SAFETY WARNING!!
There have been rumours of people and/or companies trying to repair these units and in some cases imitate our work. Please understand that although the DSC system is not absolutely crucial, modifying the ABS controller/pump in any way (without superior extensive knowledge) in the technology of advanced braking systems and electronic control modules, you will be risking the life of others. Please do not attempt to repair these units yourself and please do not offer such services to trade or the general public. We have been in business since 1972 as a group company and all our parts, services are fully tested before leaving the workshop. All units are thoroughly tested on specific specialist equipment to ensure maximum quality. Our DSC Fault Modifications come fully approved and as far as we’re aware, there is no other company out there that can successfully repair these units and completely remove the defective state.
If you’ve got a car with a Brake Pressure Sensor fault relating to the ABS unit or have the DSC light lit up on your dash, then call us today and we’ll give you an instant quote. The number to call is 0203 815 9441
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Ajaz is a seasoned automotive electronics engineer with deep expertise in remanufacturing vehicle electronics. He has developed skills in all areas of the automotive field, from rebuilding hydraulic steering components, and mechanical gearboxes and reworking intricate vehicle electronics. Ajaz also acquired Bodyteq, a London-based vehicle bodyshop where he has developed extensive knowledge in automotive refinishing.
Alongside his automotive career, Ajaz has built a career in the IT industry, gaining accredited certification as an AWS Certified Cloud Practitioner, Cloud Architect, and Search Engine Optimisation (SEO) specialist.
My bmw 220d is braking from 60-40 by its self but only when it rains!There is no warning lights
Hi Mark
Thanks for the enquiry,
We are aware of this type of fault and it’s common among BMW’s but it’s not always the same cause. We have sent you an email, kindly respond with your postal code for a customised quotation.
Kind Regards
Jason
SINSPEED
PLEASE can you advise me on a DSC problem on my bmw 5 series. 520d.
Hi William
Thanks for the enquiry,
The DSC fault is very common and relates to a Brake Pressure Sensor error within the ABS pump/module. We have successfully repaired hundreds of these units and in fact, they are so common that we now also keep them in stock for faster exchange service.
I have sent you an email with full information and pricing. If you have any questions, please reply to the email and we’ll be happy to assist you.
Kind Regards
Jason
SINSPEED
Hi, how much for the 1 series e87 2005 abs pump modification?
Hi Richard
Thanks for the enquiry,
I have sent you an email with full information and pricing.
Kind Regards
Jason
SINSPEED
Hi,
My BMW 320d (ls07hgy) has fail its MOT on a error code DSC- CODE – SE20, could you give me a price for repair or remanufactured unit.
Thanks,
Hi Alex
Thanks for the enquiry,
It’s a very common fault and we usually have replacement units readily available in stock. I have sent you an email with full information and pricing. If you have any questions, please reply to the email and we’ll be happy to assist you.
Kind Regards
Jason
SINSPEED
Hi there I have a BMW X5 2001 and it has been in the garage for 8 weeks , i have now been told that i need a new abs pump. Part numbers are 34516765429 and 254179672922. I’m really fed up, i need my car back and i cant find this part, please help me
Hi Sharon
Thanks for the enquiry,
We can supply this part but it would be better to repair the existing unit to avoid additional charges for programming. I have sent you an email with full information and pricing.
Kind Regards
Jason
SINSPEED
Hi I have a 2005 3 series and had a problem last week the car wouldn’t start. BMW told me the dsc unit is faulty. How can this be?
Hi Mohammed
Thanks for the enquiry,
We have sent you an email with more information about your enquiry.
Kind Regards
Sophie
SINSPEED
hi, getting 5DF0 5DF1 codes on my 2007 E85 2.0i, any ball park for repair and modification please?
cheers
Hi Jon
Thanks for the enquiry,
I have sent you an email with full information and pricing.
Kind Regards
Sophie
SINSPEED
Hi i have this fault code on my e90 325i and looking to get repaired , would this fault cause intermi soft brake pedal ?
Thanks
Micheal
Hello Michael
Thanks for getting in touch,
We have sent you an email with more details.
Kind Regards
Sophie
SINSPEED
I have an 2008750li and I am getting the 51B0 code. Is that the asb module as well? How much is your repair service?
Hello Bennie
Thanks for getting in touch,
We have sent you an email with full details and pricing.
Kind Regards
Sophie
SINSPEED
My ABS Module for bmw x5 2002 4.4i is faulty
Hello Jack
Thanks for getting in touch,
We have sent you an email with full details and pricing.
Kind Regards
Sophie
SINSPEED