ESP and BAS Fault Codes

[tenkan]

Can anyone with any knowledge help on what part needs to be checked/ replaced. Getting ABS/BAS/ESP dashboard lights.

My scanner reads the codes as follows

4580 State: Current A7/3 [Traction System Hydraulic Unit]: Loose contact in voltage supply.

4560 State: Current A7/3 [Traction System Hydraulic Unit]: Loose contact in voltage supply

Seems a bit weird,as also the CVT goes into "limp" mode" No warning lights for the CVT.
I also get the tyre pressure warning as well popping up, so 4 malfunctions in total.

 

[ChrisPDuck]

ABS/BAS/ESP and tyre pressure were both triggered by a faulty wheel speed sensor on my car, but my scanner did pick up fault codes relating to those sensors, so this may not be the issue in your case. In my case, the fault codes suggested both rear speed sensors and the front left were faulty, whereas in reality I believe it was the front right that was faulty. I think it saw a non-zero reading from the front right, so decided the car was moving, which meant that the zero readings from the other three were flagged as faults. My 2006 W221 is old enough that tyre pressure isn't actually measured by pressure sensors - it detects a fault by measuring differential wheel speed.

 

[tenkan]

ABS/BAS/ESP and tyre pressure were both triggered by a faulty wheel speed sensor on my car, but my scanner did pick up fault codes relating to those sensors, so this may not be the issue in your case. In my case, the fault codes suggested both rear speed sensors and the front left were faulty, whereas in reality I believe it was the front right that was faulty. I think it saw a non-zero reading from the front right, so decided the car was moving, which meant that the zero readings from the other three were flagged as faults. My 2006 W221 is old enough that tyre pressure isn't actually measured by pressure sensors - it detects a fault by measuring differential wheel speed.

Interesting, yes I believed it would be a ABS sensor, I only get into "limp" mode after driving a few kms (with the warning lights on)
So for me, without the code for ABS sensor I wouldn't know which one to replace.
I've had a look at the brake pedal switch which some forum members said could sometimes cause this issue, but ruled it out because my brake lights are working as they should when the pedal is depressed. I forgot to add the vehicle is also an older version 05 A170 W169