Is the DSC Control Unit faulty?

Asked by Apr 10, 2012 at 06:13 AM about the 2002 BMW Z3 3.0i Convertible

Question type: Maintenance & Repair

Hi I have a 2002 Z3 3 ltr that has had water ingress in passenger footwell where the DSC sensors are
the signs were the DSC warning light and brake fluid warning lights permanently on.. After emptying
water and drying out and testing, the YAW sensor showed no output but the lateral acceleration
sensor was showing an output. The YAW sensor was replaced and diagnostic equipment to test DSC
carried out by independent BMW garage who say that the sensors appear to be OK and outputs are
getting to DSC unit (wiring continuity checked) but the diagnostics are not seeing these outputs at
the DSC control unit. Their assessment is that the DSC control unit is also at fault now. Would you also
think this was the case? Looking at wiring the inputs to DSC unit from sensors are to the "base" of
transistor and therefore putting either max 5v or 0v (as probably was the case) would not harm it.
What are your thoughts? Thanks

1 Answer

1,475

look for a used DSC unit from a breaker, these units can suddenly die like that. on later DSC units like the E39 and E46 the electronics were a bolt on module but on the Z3 i think it is a whole valve block. on the E39 you could get it to kick back in by giving the unit a firm tap, but it would always fault again.

Your Answer

Add photo

Related Questions

Search BMW Z3 Questions

BMW Z3 Experts

#1 FordNut
FordNut
Reputation 270
#2 Tom Demyan
Tom Demyan
Reputation 260
#3 Kelly Mayo
Kelly Mayo
Reputation 230
View All

Related Models For Sale

Used BMW Z4
48 Great Deals out of 1,392 listings starting at $3,000
Used BMW Z3 M
82 listings starting at $8,000
Used BMW 3 Series
1,469 Great Deals out of 38,438 listings starting at $1,700
Used Mazda MX-5 Miata
62 Great Deals out of 4,843 listings starting at $2,500
Used Chevrolet Corvette
202 Great Deals out of 20,888 listings starting at $4,993
Used Porsche Boxster
66 Great Deals out of 1,497 listings starting at $2,995
Used BMW M3
67 Great Deals out of 1,922 listings starting at $4,350
Used Ford Mustang
397 Great Deals out of 44,403 listings starting at $1,000
Used Nissan 350Z
82 Great Deals out of 1,508 listings starting at $3,988
Used Mercedes-Benz SLK-Class
70 Great Deals out of 1,458 listings starting at $3,250
Used Chevrolet Camaro
309 Great Deals out of 38,867 listings starting at $1,250
Used Honda S2000
18 Great Deals out of 334 listings starting at $8,991
Used Porsche 911
119 Great Deals out of 4,601 listings starting at $8,901
Used BMW X5
441 Great Deals out of 15,323 listings starting at $2,900

Used Cars For Sale

2002 BMW Z3 3.0i Convertible For Sale
13 listings starting at $5,677
2001 BMW Z3 3.0i Convertible For Sale
21 listings starting at $5,300