ABS, ESP and Active light System inop
10-07-2017, 03:12 AM
#1
Junior Member
Thread Starter
ABS, ESP and Active light System inop
Hi all,
Got a weird issue which at first harnessed itself as the usual ABS, ESP Inop message, followed also with Active Light System Inoperative.
Used my Carly Apps which identified the Forward left Wheel Speed Sensor.
Having Replaced that, the ABS ESP message cleared and the driveability back to normal.
However, the Active Light System message would still reappear, and Carly Apps now identifies fault as
"009032 Fault; No CAN message Wheel speed from control unit N47-5 (ESP control Unit)"
and
"005106 Fault; L6/1 (left front Speed sensor) : check installation position of sensor"
So its still faulting the left fornt sensor it seems. But what confuses me is that if the sensor or sensor installation is at fault, why has my
new replacement sensor not given the same problem to the ABS ESP system, and only solely to the active Lights.
Isnt it a shared signal by all the systems anyway, and what other installation requirements could there possibly.
Old unit came out without shims, so replacement unit went in without shims as well.
Thanks for any help guys
Rgds
Jef
Btw would pulling the fuses to the ESP help reset, if there is such a procedure needed.
Got a weird issue which at first harnessed itself as the usual ABS, ESP Inop message, followed also with Active Light System Inoperative.
Used my Carly Apps which identified the Forward left Wheel Speed Sensor.
Having Replaced that, the ABS ESP message cleared and the driveability back to normal.
However, the Active Light System message would still reappear, and Carly Apps now identifies fault as
"009032 Fault; No CAN message Wheel speed from control unit N47-5 (ESP control Unit)"
and
"005106 Fault; L6/1 (left front Speed sensor) : check installation position of sensor"
So its still faulting the left fornt sensor it seems. But what confuses me is that if the sensor or sensor installation is at fault, why has my
new replacement sensor not given the same problem to the ABS ESP system, and only solely to the active Lights.
Isnt it a shared signal by all the systems anyway, and what other installation requirements could there possibly.
Old unit came out without shims, so replacement unit went in without shims as well.
Thanks for any help guys
Rgds
Jef
Btw would pulling the fuses to the ESP help reset, if there is such a procedure needed.
Last edited by Jefri Yahya; 10-07-2017 at 06:15 AM.
10-07-2017, 08:10 AM
#3
Senior Member
10-07-2017, 08:12 AM
#4
Junior Member
Thread Starter
I did. The ABS EPS stayed off and didnt return. But when I would drive above 40-50km/hr, that Active Light Sys would reappear.
Ive tried 3 times now, and seems to be consistent with the same messages as above.
My procedure for clearance was with the carly apps. It worked fine except for the Active light message.
Which is why I thought my new sensors were duff. But if they were, I would think the ABS would not have been sorted.
Ive tried 3 times now, and seems to be consistent with the same messages as above.
My procedure for clearance was with the carly apps. It worked fine except for the Active light message.
Which is why I thought my new sensors were duff. But if they were, I would think the ABS would not have been sorted.
10-07-2017, 08:15 AM
#5
Junior Member
Thread Starter
10-07-2017, 08:19 AM
#6
Senior Member
I did. The ABS EPS stayed off and didnt return. But when I would drive above 40-50km/hr, that Active Light Sys would reappear.
Ive tried 3 times now, and seems to be consistent with the same messages as above.
My procedure for clearance was with the carly apps. It worked fine except for the Active light message.
Which is why I thought my new sensors were duff. But if they were, I would think the ABS would not have been sorted.
Ive tried 3 times now, and seems to be consistent with the same messages as above.
My procedure for clearance was with the carly apps. It worked fine except for the Active light message.
Which is why I thought my new sensors were duff. But if they were, I would think the ABS would not have been sorted.
Otherwise it could be a wiring harness issue - I wonder if you can check the resistance at the sensor plug - and then again at the plug going into the abs module - if you look up an old post thread "ML 320 ABS Traction code 5967" maj dundee listed the pinout on it (it was very helpful) - it should show up if the resistance is difference from the sensor only
10-08-2017, 11:21 AM
#7
Junior Member
Thread Starter
Removed sensor was reading at 1890 K ohms. Similar to new one. So suspect that the old one would break down in operational heat or vibration.
Anyway I am still obscured to why the failure now is simply limited to the active light system. I thought the curve light on the bumper operated based on steering angle. And I don't see the headlights attached to any actuator to change the beam throw. I see only caps in place on where the push rods are. Also if EPC or the speed signal was at fault, why would the rest of the system not have thrown a code also. The sensor has only two pins, And the receiving socket also only two slots. I would think that the signal is shared being like this physically.
I did notice though that the replacement had slightly different part numbers. Dono of compatibility is an issue. The old ones were
164 540 09 17 and new ones were 164 905 82 00/163. Perhaps a different impedance required? But again strange that the ABS didn't have problems with it.
I also noted that on shutdown, the message was not latched. Meaning after a shutdown, engine restarting would not show the message prompt. If the Carly apps was hooked up for diagnostics, it would however reveal that the Active light sys did latch the fault. I'm beginning to think that the Carly apps can't quite clear the message properly. But then again, it worked fine before when I had to replace the right forward sensor some time back. (Unless the active light system only looks at the left forward sensor)
Oh the agony of my wondering mind😭
Anyway I am still obscured to why the failure now is simply limited to the active light system. I thought the curve light on the bumper operated based on steering angle. And I don't see the headlights attached to any actuator to change the beam throw. I see only caps in place on where the push rods are. Also if EPC or the speed signal was at fault, why would the rest of the system not have thrown a code also. The sensor has only two pins, And the receiving socket also only two slots. I would think that the signal is shared being like this physically.
I did notice though that the replacement had slightly different part numbers. Dono of compatibility is an issue. The old ones were
164 540 09 17 and new ones were 164 905 82 00/163. Perhaps a different impedance required? But again strange that the ABS didn't have problems with it.
I also noted that on shutdown, the message was not latched. Meaning after a shutdown, engine restarting would not show the message prompt. If the Carly apps was hooked up for diagnostics, it would however reveal that the Active light sys did latch the fault. I'm beginning to think that the Carly apps can't quite clear the message properly. But then again, it worked fine before when I had to replace the right forward sensor some time back. (Unless the active light system only looks at the left forward sensor)
Oh the agony of my wondering mind😭
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10-09-2017, 12:06 AM
#9
Junior Member
Thread Starter
10-09-2017, 06:49 AM
#10
MBWorld Fanatic!
I'm almost positive you installed the wrong sensor. Post your full vin #.
Last edited by Maj. Dundee; 10-09-2017 at 06:53 AM.
10-09-2017, 06:52 AM
#11
MBWorld Fanatic!
I did notice though that the replacement had slightly different part numbers. Dono of compatibility is an issue. The old ones were
164 540 09 17 and new ones were 164 905 82 00/163. Perhaps a different impedance required? But again strange that the ABS didn't have problems with it.
Did you order that number or did the dealer give you that number according to your vin #?
Last edited by Maj. Dundee; 10-09-2017 at 07:28 AM.
10-09-2017, 07:36 PM
#12
Junior Member
Thread Starter
Ordered it thru Pelican. Didn't actually take note of part number then. Only selected it as per menu for my car, & ordered all 4. I also just measured the new sensor lastnight. It's reading at 1385 ohms.( Or would that be Kohms I unsure now)
Historically had right front sensor identified as faulty causing ABS issues. Replaced that one only then. This was about a year ago.
Then when this recent issue happened, I replaced left with remaining spare. So in fact, the fronts now have similar part numbers fitted.
So I only noticed part number variance when this active light issue appeared
Historically had right front sensor identified as faulty causing ABS issues. Replaced that one only then. This was about a year ago.
Then when this recent issue happened, I replaced left with remaining spare. So in fact, the fronts now have similar part numbers fitted.
So I only noticed part number variance when this active light issue appeared
10-09-2017, 08:48 PM
#13
Junior Member
Thread Starter
My VIN btw. Is WDC164175-2A-175003.
Tasks I've done so far which are probably unrelated to actual problem. LOL
1/checked all tyre pressures. Made all to read 38 psi.
2/recheck installation and cable routing and for physical damage upstream, and measure sensor impedance. (Found to be 1380k ohms)
3/check wheel bearing for play
4/check cleanliness of phonic tooth and sensor bore area ( was found exceptional clean)
5/reseat the ambient light modules on the windscreen. clean windscreen (was getting rather desperate)
Tasks I've done so far which are probably unrelated to actual problem. LOL
1/checked all tyre pressures. Made all to read 38 psi.
2/recheck installation and cable routing and for physical damage upstream, and measure sensor impedance. (Found to be 1380k ohms)
3/check wheel bearing for play
4/check cleanliness of phonic tooth and sensor bore area ( was found exceptional clean)
5/reseat the ambient light modules on the windscreen. clean windscreen (was getting rather desperate)
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Jefri Yahya (10-10-2017)
10-10-2017, 07:53 AM
#17
Junior Member
Thread Starter
That's superb info Maj. Wished I had that IPC.
So looks like no mention of the part numbers of what I fitted as replacement indeed.
I will hence need to source same part numbers then. Makes sense as I only had this problem after fitting these new ones.
Thanks very very much indeed. I am truly in awe by your knowledge and willingness to help those such as myself in lowly little Brunei.
I'm guessing what I have is actually rated for w163.
Thanks so very much again Maj.
So looks like no mention of the part numbers of what I fitted as replacement indeed.
I will hence need to source same part numbers then. Makes sense as I only had this problem after fitting these new ones.
Thanks very very much indeed. I am truly in awe by your knowledge and willingness to help those such as myself in lowly little Brunei.
I'm guessing what I have is actually rated for w163.
Thanks so very much again Maj.
10-10-2017, 08:50 AM
#18
Junior Member
Thread Starter
Btw Maj, if you don't mind, could I see what I should get for the rears. I have bought that also with them fronts and noticed the 163 in the part number also. Looks like I'll need to order those too as my correct spares.
10-10-2017, 09:23 AM
#19
Junior Member
Thread Starter
And now I'm confused again.
A164 540 09 17 is what I found originally fitted. As per diagram, are A164 540 16 17, and
A164 541 00 40 and A164 421 07 94 also compatible. Incase I'm misreading the diagram.
I also found Ecstuning supplying that same
A164 905 82 00. Is it perhaps because US models don't use that Active Light system? And hence won't have this issue like me.
A164 540 09 17 is what I found originally fitted. As per diagram, are A164 540 16 17, and
A164 541 00 40 and A164 421 07 94 also compatible. Incase I'm misreading the diagram.
I also found Ecstuning supplying that same
A164 905 82 00. Is it perhaps because US models don't use that Active Light system? And hence won't have this issue like me.
10-10-2017, 10:41 AM
#20
MBWorld Fanatic!
And now I'm confused again.
A164 540 09 17 is what I found originally fitted. As per diagram, are A164 540 16 17, and
A164 541 00 40 and A164 421 07 94 also compatible. Incase I'm misreading the diagram.
I also found Ecstuning supplying that same
A164 905 82 00. Is it perhaps because US models don't use that Active Light system? And hence won't have this issue like me.
A164 540 09 17 is what I found originally fitted. As per diagram, are A164 540 16 17, and
A164 541 00 40 and A164 421 07 94 also compatible. Incase I'm misreading the diagram.
I also found Ecstuning supplying that same
A164 905 82 00. Is it perhaps because US models don't use that Active Light system? And hence won't have this issue like me.
If the part number starts with 164, then it can only apply to W164 and not W163.
Look at the highlighted part #164 440 83 39. Any number below that has been replaced and still reverts to 164 440 83 39 at the bottom of the page. So they are not compatible because they were all replaced.
