Front axel level sensor implausible (headlights)
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Junior Member
Joined: Nov 2013
Posts: 65
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W211 E55 AMG
Front axel level sensor implausible (headlights)
Ok my headlights don't move up or down and seem to be in the lowest position.
Ran a scan came back with:
Front axel level sensor b22/2 signal from component implausible
Where is it located and does any one have a part number?
Suspension level is fine btw....
Ran a scan came back with:
Front axel level sensor b22/2 signal from component implausible
Where is it located and does any one have a part number?
Suspension level is fine btw....
Former Vendor of MBWorld
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From: Houston
2003 W211 E55, 2003 W220 S600
http://mb.mikekantor.com/star_finder...rt_finder.html
select B22/2 from the drop down menu. Picture looks like the rear sensor
select B22/2 from the drop down menu. Picture looks like the rear sensor
Newbie
Joined: Sep 2017
Posts: 1
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Mercedes E220 W211
Problem with B22/2 left headlight (XALWA-L)
Hello !
I saw that you had a problem with your headlight: "b22/2 signal from component implausible"
I have with my Mercedes W211 exactly the same problem, and it seems because of that the low beam of the left headlight doesn't work.
I've been looking everywhere and there is no B22/2 on the car
Now after few days the entire XALWA Module don't respond on CAN (missing on SAM'driver and can't connect with SD Connect).
The power goes correctly to the headlight, so I'm thinking to change the calculator module but I'm not sure if it will solve my problem.
Can you tell me how you solved your problem?
Best regards.
Mr Constantin, from France.
I saw that you had a problem with your headlight: "b22/2 signal from component implausible"
I have with my Mercedes W211 exactly the same problem, and it seems because of that the low beam of the left headlight doesn't work.
I've been looking everywhere and there is no B22/2 on the car
Now after few days the entire XALWA Module don't respond on CAN (missing on SAM'driver and can't connect with SD Connect).
The power goes correctly to the headlight, so I'm thinking to change the calculator module but I'm not sure if it will solve my problem.
Can you tell me how you solved your problem?
Best regards.
Mr Constantin, from France.
MBWorld Fanatic!
Joined: Jan 2014
Posts: 3,969
Likes: 1,317
From: Republic of Texas
'99 and '05 E55 AMG
Sensor designations do not always match depending upon the source. My documentation shows:
B22/3 rear level sensor
B22/8 left front axle level sensor
B22/9 right front axle level sensor
The front sensors are attached to the front upper swingarms.
The rear sensor is attached to the rear stabilizer bar (aka "Sway bar" or "anti-sway bar"). This is the sensor used to adjust headlights.
If the right side headlight adjusts, it is not the level sensor B22/3, it is a problem with the left side headlight module.
B22/3 rear level sensor
B22/8 left front axle level sensor
B22/9 right front axle level sensor
The front sensors are attached to the front upper swingarms.
The rear sensor is attached to the rear stabilizer bar (aka "Sway bar" or "anti-sway bar"). This is the sensor used to adjust headlights.
If the right side headlight adjusts, it is not the level sensor B22/3, it is a problem with the left side headlight module.
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Member
Joined: Apr 2013
Posts: 106
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W212 E550 4Matic, W211 E55 AMG
Hi guys,
My drivers side headlight isn't auto levelling. The passenger side works fine. I am getting B22-2 (Front axle level sensor) Implausible. I have no airmatic problems. Is there only one sensor in the front or two? I am assuming the left one is bad? Is this possible with no codes for the airmatic? I am just waiting for all my parts for a projector retrofit so I need to take care of this problem?
Any help would be appreciated
My drivers side headlight isn't auto levelling. The passenger side works fine. I am getting B22-2 (Front axle level sensor) Implausible. I have no airmatic problems. Is there only one sensor in the front or two? I am assuming the left one is bad? Is this possible with no codes for the airmatic? I am just waiting for all my parts for a projector retrofit so I need to take care of this problem?
Any help would be appreciated
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Joined: Aug 2014
Posts: 5
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2005 E320 4matic Wagon
Auto-leveling headlights failed independently
Sensor designations do not always match depending upon the source. My documentation shows:
B22/3 rear level sensor
B22/8 left front axle level sensor
B22/9 right front axle level sensor
The front sensors are attached to the front upper swingarms.
The rear sensor is attached to the rear stabilizer bar (aka "Sway bar" or "anti-sway bar"). This is the sensor used to adjust headlights.
If the right side headlight adjusts, it is not the level sensor B22/3, it is a problem with the left side headlight module.
B22/3 rear level sensor
B22/8 left front axle level sensor
B22/9 right front axle level sensor
The front sensors are attached to the front upper swingarms.
The rear sensor is attached to the rear stabilizer bar (aka "Sway bar" or "anti-sway bar"). This is the sensor used to adjust headlights.
If the right side headlight adjusts, it is not the level sensor B22/3, it is a problem with the left side headlight module.
MBWorld Fanatic!
Joined: Jan 2014
Posts: 3,969
Likes: 1,317
From: Republic of Texas
'99 and '05 E55 AMG
I know this is an old thread. Sorry. But I've been dealing with the same issue with both my healights for a few years now. The once sporadic, now full failure of the auto-leveling (virtually always aimed at the ground) has always been independent. From your post, it sounds as though that means the problem is in the headlight, not any/either of the level sensors at the axles. If that's the case, are you aware of any way to troubleshoot or repair the headlight, or is it something that can only be remedied by replacing the entire headlight assembly? I REALLY need to do this repair,and I do love this car, but spending approx $750 each for two headlights, on a 19-year-old car with 230K miles, is very difficult to justify. Any help or advice would be very much appreciated.
Worst case, disconnect the level sensor, then adjust both headlights using the level adjustments, and leave them as is (no auto-leveling). You will get an error code on the diagnostics but not a CEL.
I feel your pain as I spent $1256 for a pair of replacement headlights...
Newbie
Joined: Aug 2014
Posts: 5
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2005 E320 4matic Wagon
If both headlights are pointing at the ground, I would say it is the level sensor on the rear sway bar. The pivot points do go bad and the sensor arm can disconnect. Inspect the sensor on the rear sway bar first.
Worst case, disconnect the level sensor, then adjust both headlights using the level adjustments, and leave them as is (no auto-leveling). You will get an error code on the diagnostics but not a CEL.
I feel your pain as I spent $1256 for a pair of replacement headlights...
Worst case, disconnect the level sensor, then adjust both headlights using the level adjustments, and leave them as is (no auto-leveling). You will get an error code on the diagnostics but not a CEL.
I feel your pain as I spent $1256 for a pair of replacement headlights...
I failed to mention that my W211 is a wagon, which has auto-leveling rear suspension. I believe the rear auto-leveling is controlled by the level sensor on the rear sway bar, and that system is working properly. So if that sensor also controls the headlight leveling, it shouldn't be the cause of my headlight issue (and if I disconnect it, my auto-leveling suspension won't work.)
I just learned from a similar post on another MB blog that there's a level-sensor on the front suspension, too, but I haven't had a chance to locate and check it. I also hadn't realized there was a manual level adjustment on the headlights (which... duh! Of course there would be!) so haven't monkeyed with that yet, either. Hopefully between the front level-sensor and level adjustment on the headlights, I'll have some success!
Last edited by Barndoggy; Jan 16, 2024 at 04:10 PM.
Senior Member
Joined: Feb 2021
Posts: 433
Likes: 234
From: Germany RLP
W211 E220, W211 E55, W203 C55
Proper way to check would be to check the voltage reading with xentry and see if they change, when you move the lever of the sensor. If your sensors are working fine, it's likely an issue with your headlight. You can tell the headlight to move up and down with xentry and check if that works. If there's an issue with headlights itself you can open them up and inspect them. It happens that the wiring in the headlight breaks. This would be the most cost effective way to diagnose and fix everything. I rebuilt my headlights for less than 100€. I got the glasses and lenses from China. They perform better than new stock headlights.
