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I have 4 erros in my volvo v40
CEM-B11D453
BCM-U300048
PSCM-U041568
PAM-U041586
PAM-U100B00all of them looks like its because of BCM-U300048.
i can read speed of wheels and a lot of parameters of bcm, but i still get this errors. i was going to pay 120 euros (750+ in brazil) to update/reinstall the firmware of the bcm module, but i'm afraid that it is a internal problem.It costs 4900 in a specialized repair station, and 750 +/- to do the reflash.... what you guys think i should do?
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I would suspect a defect wheel speed sensor, corroded sensor ring at one of the wheel bearings, or low battery voltage.
Put the car on a lift and check the signals of all sensors with an oscilloscope. The sensors could still be working, but the sensor rings could miss one or more teeth which results in sending nonsense signals to the BCM.
