Veni

Hello all.

After each start the engine, at intervals to 35-45 seconds, note the response of the system BAS.

Once, for a very short time, with different intensity - from the sound of the response to a sharp breaking.

Effects noted in both - the movement and stay.

The lights on the dashboard ABS, BAS does not light up.

What I've done so far is:

- Checked charging voltage of 13.3 V, ACC battery - new - 2 months.
- All contacts that are relevant to the ESP/SPS/BAS control module - N47-5, are checked and sprayed with a contact spray;
- Changed the brake light switch;
- Changed the BAS diaphragm travel sensor;
- Checked all voltages and switching, as described in the Star Finder - WebETM;
- Diagnostics with Star Diagnos - no errors.


Please advice on what else to check to fix the annoying problem.

The car is W210 E300 Turbodiesel WDB2100251A598975

Thanks in advance for answers

Venelin

Plutoe

Very strange that your star system did not switch to the HHT mode and help you diagnose your W210 BAS problem. It should!

In any event,with star(DAS) I would check all speed sensors. I would also make sure all tires are the same size and inflated the same. I would also check the stop lamp switch.

Absolutely amazing you do not have a fault in the ASR, BAS or ETS. Good luck

Veni

BAS system was tested in my presence with Star Diagnosis of highly experienced service engineer. After a thorough test, it shows NO errors.

The test is repeated in another, independent service from an experienced service engineer.

The result is again - NO errors!

Full tests were made BAS.ABS, ESP - no problems there.

The four tires are the same, the same wheels, properly inflated. In summer and winter tires the problem remains.

As I wrote, have been replaced
- the brake light switch;
- the BAS diaphragm travel sensor
- new battery - one month ago.

The problem persists.

Thanks for your answer.

Plutoe

When you solve the problem let us know------this will be a great case study for "stumping the chumps"

Veni

My problem has existed for quite some time, so I turn to you - asking for advice and help.

Plutoe

After reading all the documentation and my experience, you have done a good job with all the problem areas. The only other diagnosis I would suggest is a CAN analysis, however I still find it VERY hard to believe that the BAS dash light did not create a fault. Something was missed in the diagnosis----what ask your mechanic. Good Luck!!

Veni

Both tests Star Diagnozis BAS system was in my presence. Personally assured in the absence of errors in the test results.

The lamp on the dashboard is working - every time you start the engine to check all control lights on the dashboard - but you knew that.

For the service engineer has no problems with the system BAS - he says - here - everything is OK and I do see that.

But I also feel the activation of BAS after each engine start.

In two shop - same - no result

Block N47-5 - ESP/SPS/BAS control module- is too expensive to change it without a compelling reason.

Plutoe

Please do not get upset with my question------what I question is you keep saying I saw DAS screen-----my issue is that when you diagnose an early W210---DAS changes you to the older HHT screen and it is the HHT screen that you do a "short test" or what ever single module you want to test-----Is that what he did??

Veni

Both tests were performed with Star Diagnozis, rather than HHT.
There were full, not short tests of the system BAS

I hope I misunderstood your question?

Plutoe

Yes I hope you did also----let me explain, depending on which DAS Xentry(Star) version you use---the choices are a s follows select Brand(MB)-select Model(W210)-select configuration-select enter--AND WITH W210 you first see the DAS screen-then it automaticly switches to the HHT screen(You do not have a choice) it switches automaticly---then you are at the MAIN MENUE OF HHT---#1 short test enter and it checks al the modules in the car for faults!!

If you did not do or see or witness this then you did not use Star to diagnose your car___SIMPLE AS THAT NO EXCEPTIONS

Veni

Today again testing the system.

Carefully monitored service engineer and his laptop screen.

Procedure which will execute it, is quite exactly the same as you describe.

Errors in the system no.

But .. BAS is activated again randomly ....

Thank you ... spend my hope that with your help my problem to solve....

Veni

Today I did a test on the move.

When HHT test modules BAS, ABS ESP, they apparently inactive, respectively - running error is not noticeable.

I plan to test with ESP off system - this can give an answer.

I will not give up!!!

Plutoe

Nice job----while moving also check the speed sensors on the ASR module do they match the spedo

Welcome to the world of auto diagnostics----it ain't all that simple and straight forward is it, however you have to know your cars modules or you will get seattle samed every time!!

Veni

Bad, bad, bad ...

When i turn off the ESP problem occurs again - once under the same conditions and the same.

Recorded no errors, meaning that the system work properly - which means that something improper activate it and it work properly.

What activates it is during the sensor diaphragm. It was replaced with a new one - no result.
Unfortunately, I do not own Star Diagnosis - otherwise I would not drive your car with continuous monitoring.

Now give up - again read and think ..

Thanks for the moral support.

Greetings from Bulgaria.

Plutoe

Don't forgrt to have a big glass of the good Bulgarian red wine!! Keep trying

Veni

If I decide my problem, I will try to send you a few bottles Mavrud.

Cheers!

Veni

Apparently, nobody loves Bulgarian red wine - Mavrud....

problem continues

Hirnbeiss

What exactly happens when you say the BAS activates? Do you mean the ABS, with pump noise and pulsating brake pedal?
And sorry to say that Bulgarian wine doesn't have wide distribution in the States.

Veni

BAS system detects sudden the brake pedal.
And he pressed fully.

For me to receive just that - a sharp and complete the brake pedal for a very short time.

I see him and how he sank back in an instant.

What you're describing is normal operation of the system ABS, which in this case do not comment.

Bulgarian red wine is something our country is famous around the world. There must be a way to get a few bottles to America

Plutoe

If I win the power ball lottery(290 millonies) Saturday I will charter a jet and meet you in Burgas or Varna------we will first drink some wine then go to the beach then we can scan the car and find out the real problem.

Then we will drive your car to Ruse and hopefully say hello my girlfriend who I hope is still alive and drink some more wine!! Sound like a plan!!

Hirnbeiss

Don't spend it all too quickly. As you know, in our "greatest country on the planet" the organization (government) that says you are winning 290M demands a 40% share of the pie. I call that false advertising.


One thought on the control unit: I think it sits next to the trans control unit on the passenger side. May be worth pulling to verify it is clean and well-seated.

Veni

I sincerely wish you to win!

But even if you do not win, you've got a friend in Bulgaria, who will be happy to see you.

Mavrud produced near Plovdiv, and I accidentally live right here

You just come ...

PS I also hope to win the lottery - this week it is approximately $ 2 million.

But unfortunately the above is the correct - that profit is probably not for me.


But you never know - hope dies last

Good luck!!!

Plutoe

Thank you for your kind thoughts. The good news is that no one won therefore the new Wednesday prize amount is 400 million, I an going to buy a ticket!!

In any event to solve your problem, I regret to advise that you must find some mechanic that has the MB diagnostic DAS Xentry. With that software(tool) he will find and be able to fix your problem quickly---------the alternative---well you know that--Have a good afternoon!!