GL Class (X166) 2013-2015 after facelift became GLS (X166)

Power Steering Malfunction, check manual error

Old May 30, 2020 | 01:17 PM
  #1  
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Power Steering Malfunction, check manual error

We are stuck in the driveway currently. I thought it was an electronic fault that would cycle on next start, it remained. We checked fuses, ran OBD codes (never saw a place that would report steering issues) and *tried* to check fluids. Cant find a place to do that. We removed panels over the engine in hopes of finding a reservoir cap and we can’t seem to find it.

Has anyone seen this? is there an easy way to limp it to the shop or am I stuck towing?

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Old May 30, 2020 | 01:56 PM
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Originally Posted by aggieoilman
Has anyone seen this? is there an easy way to limp it to the shop or am I stuck towing?
FYI, the power steering on the X166 is electric so no fluids.
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Old May 30, 2020 | 09:42 PM
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Originally Posted by cadetdrivr
FYI, the power steering on the X166 is electric so no fluids.
well damn, that explains why I couldn’t find the reservoir. Sounds like the motor went out. Is there any way to troubleshoot and pinpoint this?
also have any of you tried to drive without the power steering?
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Old Jun 1, 2020 | 01:55 AM
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Do you know which relay or fuse controls this motor?
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Old Jun 8, 2020 | 05:10 PM
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Anyone?

Does this mean I need to change the entire rack and pinion?
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Old Jun 8, 2020 | 09:14 PM
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Not sure if it's related to your issue, but there was a recall for the steering rack bolts on our cars. In extreme cases the problem could lead to losing power steering.

https://www.guideautoweb.com/en/articles/48979/recall-notice-for-mercedes-benz-caused-by-salty-roads/

https://www.cars.com/articles/2016-2017-mercedes-benz-gl-class-gle-class-gls-class-e-class-recall-alert-1420695200572/

Last edited by mtm; Jun 9, 2020 at 09:58 AM.
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Old Jun 9, 2020 | 08:00 AM
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This doesn’t come up often on the site. Have you tried changing both batteries? Strange things happen when the batteries (main and aux) are nearing end of life.
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Old Jun 11, 2020 | 12:44 AM
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My local shop checked the recalls and it sounds like some bolts needed changing but nothing with the rack itself.

I am thinking it’s possible it could be an electrical or battery issue. I don’t know where the second one is but do remember noticing the vehicle was having a hard time starting so it’s possible it could be a weak battery. Would a battery test show that or would I need to replace and see?
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Old Oct 6, 2020 | 08:18 PM
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just had this issue happen on my 2013 GL450; I was just going down the highway and the power steering warning popped up, and the steering became insanely heavy. Managed to reach my destination, shut off the car, came back ten minutes later and....no issues, it's working again and haven't had a problem. but.....

if power steering cuts out while moving, it's very dangerous. What would cause an intermittent failure like this because I'd really like to not be caught out again. I was going straight; if it happened on an off ramp it could have ended quite badly.
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Old Oct 6, 2020 | 11:56 PM
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Originally Posted by kismetcapitan
just had this issue happen on my 2013 GL450; I was just going down the highway and the power steering warning popped up, and the steering became insanely heavy. Managed to reach my destination, shut off the car, came back ten minutes later and....no issues, it's working again and haven't had a problem. but.....

if power steering cuts out while moving, it's very dangerous. What would cause an intermittent failure like this because I'd really like to not be caught out again. I was going straight; if it happened on an off ramp it could have ended quite badly.
had to replace the whole rack and pinion. Cost way too much. Then the AC went out, spent $400 on a new blower. Same issue. Got rid of the thing. Now rolling in an X7. I think I’m done with MB. Best of luck to all!
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Old Nov 7, 2020 | 01:11 AM
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Originally Posted by aggieoilman
had to replace the whole rack and pinion. Cost way too much. Then the AC went out, spent $400 on a new blower. Same issue. Got rid of the thing. Now rolling in an X7. I think I’m done with MB. Best of luck to all!
I may have to your way soon (being done with MB). Mine is a 2017 E300 on a Parking lot. Put gear in reverse, "Voilà"..... Steering Malfunction on Dashboard with stiff steering wheel. Flatbed it to the MB Dealer and was told I have to change the Steering Rack Assembly at a huge cost after having vehicle for only about 6 months?
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