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#1
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W211 E320 CDI ESP and ABS fault
Suddenly, the esp and abs show faults on my car, has anyone experienced this before and what might I do to address and fix this issue? Also, the car feels like it has no power steering!
Thank you in advance
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Currently Driving 2006 E320 CDI 1999 E300 Turbo Diesl 2002 ML500 1995 E320 Station Wagon MBs I've owned 1997 E320 Assassinated by Pine Tree 1987 300E Wife Killed Engine 1981 300D Stretch Limo Total Loss 1970 250 Coupe 212,000 mi. 1974 450sel 184,000 mi. 1974 240D 377,000 mi. 1977 300D 204, 000 mi. 1979 280se God Only Knows! 1983 240D 130,000 mi. 1972 220D 280,000 mi. 1983 300SD 244,000 mi. |
#2
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Make sure serpentine belt OK 1st.
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Jim |
#3
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The serpentine belt is fine! I think this happened once before and for some reason the power steering seems to go out when it does!
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Currently Driving 2006 E320 CDI 1999 E300 Turbo Diesl 2002 ML500 1995 E320 Station Wagon MBs I've owned 1997 E320 Assassinated by Pine Tree 1987 300E Wife Killed Engine 1981 300D Stretch Limo Total Loss 1970 250 Coupe 212,000 mi. 1974 450sel 184,000 mi. 1974 240D 377,000 mi. 1977 300D 204, 000 mi. 1979 280se God Only Knows! 1983 240D 130,000 mi. 1972 220D 280,000 mi. 1983 300SD 244,000 mi. |
#4
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The steering rack has some sort of electronic input, or maybe output, that is used by the stability control system.
When some faults in the ABS/ESP systems are encountered the steering rack function is put into a default mode and the steering feels weird. A scan tool should help you figure out what ABS/ESP issues are and the steering will go back to normal when the codes are resolved. I had this issue and the problem was a wheel speed sensor. |
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The power steering takes a vehicle speed reference, and this is used to operate an actuator in the hydraulic circuit. This makes it loose when parking but tight at high speed. If it loses its speed reference it goes to tight mode all the time.
There is a steering angle sensor and this is used as an input to the ESP so the car knows what the driver is telling it to do. This is in the steering wheel hub. I agree it’s probably a wheel speed sensor going bad, these cars need the speed signal from all 4 wheels to agree and if they don’t they will throw the flag. Either a true Xentry or a scan tool should be able to tell you the 4 wheel speeds. Slow roll in a parking lot is enough to tell what is or is not happening.
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The OM 642/722.9 powered family Still going strong 2014 ML350 Bluetec (wife's DD) 2013 E350 Bluetec (my DD) both my kids cars went to junkyard in 2023 2008 ML320 CDI (Older son’s DD) fatal transmission failure, water soaked/fried rear SAM, numerous other issues, just too far gone to save (165k miles) 2008 E320 Bluetec (Younger son's DD) injector failed open and diluted oil with diesel, spun main bearings (240k miles) 1998 E300DT sold to TimFreeh 1987 300TD sold to vstech |
#6
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I agree too, a wheel speed sensor. Can I use my Icar soft Mercedes scanner to reset it so that I can use the car while waiting for the new part to arrive?
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Currently Driving 2006 E320 CDI 1999 E300 Turbo Diesl 2002 ML500 1995 E320 Station Wagon MBs I've owned 1997 E320 Assassinated by Pine Tree 1987 300E Wife Killed Engine 1981 300D Stretch Limo Total Loss 1970 250 Coupe 212,000 mi. 1974 450sel 184,000 mi. 1974 240D 377,000 mi. 1977 300D 204, 000 mi. 1979 280se God Only Knows! 1983 240D 130,000 mi. 1972 220D 280,000 mi. 1983 300SD 244,000 mi. |
#7
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No I don't think there is an override for that. If the sensor has died then you're pretty much going to have to replace it before it will reset.
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The OM 642/722.9 powered family Still going strong 2014 ML350 Bluetec (wife's DD) 2013 E350 Bluetec (my DD) both my kids cars went to junkyard in 2023 2008 ML320 CDI (Older son’s DD) fatal transmission failure, water soaked/fried rear SAM, numerous other issues, just too far gone to save (165k miles) 2008 E320 Bluetec (Younger son's DD) injector failed open and diluted oil with diesel, spun main bearings (240k miles) 1998 E300DT sold to TimFreeh 1987 300TD sold to vstech |
#8
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Check your brake bulbs , if they are the double filament type check to see if one filament has blown and is laying across the other … had the esp /abs on my Jeep GC although mine only popped up when the lights were put on
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#9
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211 not like the older ones, the rear stop lights go to the rear SAM not the cruise control module. If you lose rear lights it will just throw alarms on the speedometer telling you which bulb died.
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The OM 642/722.9 powered family Still going strong 2014 ML350 Bluetec (wife's DD) 2013 E350 Bluetec (my DD) both my kids cars went to junkyard in 2023 2008 ML320 CDI (Older son’s DD) fatal transmission failure, water soaked/fried rear SAM, numerous other issues, just too far gone to save (165k miles) 2008 E320 Bluetec (Younger son's DD) injector failed open and diluted oil with diesel, spun main bearings (240k miles) 1998 E300DT sold to TimFreeh 1987 300TD sold to vstech |
#10
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This happened to me. First step was to replace speed sensor (that's what the scanner said). But my mechanic told me it could end up being a bad/rusted reluctor ring...which it turned out to be. So I just replaced the axle.
It is possible to replace the ring....but it's a difficult job, way above my pay grade. And probably would have been more expensive to have my mechanic go that route. https://www.youtube.com/watch?v=Xsqy8TeEcA8 So first step is to replace the sensor. If it's still throwing codes, then it's a bad ring.
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14 E250 Bluetec "Sinclair", Palladium Silver on Black, 153k miles 06 E320 CDI "Rutherford", Black on Tan, 171k mi, Stage 1 tune, tuned TCU 91 300D "Otis", Smoke Silver, 142k mi, wastegate conversion 19 Honda CR-V EX 61k mi Fourteen other MB's owned and sold 1961 Very Tolerant Wife |
#11
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Front or back wheel? If it is the front the reluctor ring is part of the wheel bearing assembly. In the back it is part of the rear axle shaft. If your car lived in the north it is entirely possible that due to road salt it has been eaten up.
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The OM 642/722.9 powered family Still going strong 2014 ML350 Bluetec (wife's DD) 2013 E350 Bluetec (my DD) both my kids cars went to junkyard in 2023 2008 ML320 CDI (Older son’s DD) fatal transmission failure, water soaked/fried rear SAM, numerous other issues, just too far gone to save (165k miles) 2008 E320 Bluetec (Younger son's DD) injector failed open and diluted oil with diesel, spun main bearings (240k miles) 1998 E300DT sold to TimFreeh 1987 300TD sold to vstech |
#12
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It's the front, appears easy to replace, is it just plug and play?
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#13
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I've removed the faulty sensor cleaned up everything (mine was rusty) reinstalled the sensor and all was good from then on. That worked 2 times a third time I needed to replace the sensor.
The sensors can be tested by placing the end close to an AC magnetic field and measuring the ac from the wires should be about 2 mV.
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92 e300d2.5t 01 e320 05 cdi 85 chev c10 |
#14
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So, I replaced the front wheel sensor and the faults cleared immediately, this was last Saturday. Today I drove and the faults came back...... any suggestions???
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#15
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Did you clean everything all rust, grease and dirt before you tightened down the bolt holding the srnsor?
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92 e300d2.5t 01 e320 05 cdi 85 chev c10 |
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