Please, If you have such an experience please help !!!

I have Stilo 02 JTD 115. From time to time I'm having one of this irritating "beep beep beep" ASR/ESP failure. NO ABS failure is shown. I've read all of the threads here and I'm still a little bit confused.

Let me summarize...

The reasons for ASR/ESP failures according to the threads might be

1. Low batterie
2. Brake pedal switch failure
3. D4 connector
4. Sensors (bearing sensors, stearing wheel angle sensor ...

Let me explain more in details what is my ASR/ESP problem

The frequency of the failures varries, but approximatelly is 1-2 times per week. The failures usually heppens after 200m-1km of driving after the car has been started in the morning.

The last time I was in Fiat's dealer the recorded error was - Stearring angle sensor failure (the privious time the fault was in a bearin and before that there was no error recorded).

Fiat's wanted to charge me over a 1500 EUR to replace this sensor but I'm not a 100 % sure that the problem is in this sensor.

My question are:

Is it possible ASR/ESP failures from stearing angle sensor (different sensors) to be recorded due to low batterie voltage?

If there is a low battertie voltage, this kind of failure to happen only at the first starting of the car (this is the peak batterie drainage)? Is it true that after the car has been driven it is supposed the alternator will recharge the batterie to its nominal parameters, so the ASR/ESP failure will not happen?

Thks

With a low battery voltage then the warnings tend to happen immediately upon starting- your problem is different in commencing a short time after starting and driving

The ABS and steering could be unrelated faults but if they happen at the same time then that's more interesting

You may have the opposite- an over voltage- as that would only happen perhaps after the engine has started and the battery received some charge.

Check your voltage across the battery with engine off and then with engine running, then put some electrical load on and see what figures you get.

See if there is any voltage difference betwen the connector at the battery earth cable and an engine good earth on clean metal itself (shouldn't be any of course) showing a bad battery earth.

Re steering- it would do no harm to inspect/ clean the steering gear fuses F2 and F24 in the engine bay. There's not much that's possible to do with the electric steering

What bearing faults did you have previously? ABS?

the brake light switch i assume may be the cause of the abs/esp.... errors

:yeahthat: i'd go for this as easiest/quickest option first if no errors.However this should record a error in body computer.

I'm not having problems with the electric power steering. It's working fine without problems.


An error message was recorded in ECU from steering angle sensor (located somewhere in the steering wheel) and I was wondering is it possible this error to be recorded due to a low batterie voltage?

steering angle sensor would need recalibrating or renewal (callibrate first),also check wiring at sensor.

How exactly I should do the recalibration of the steering angle sensor ?

By disconnecting the battery or something else .... ?

Fiat examiner diag equipment only.