ESP/BAS & ABS Lights Wont Turn Off - C1140-016 - Steering Angle ...

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• Thread starter flip909
• Start date Aug 10, 2016
• Tags c1140-016 esp/bas & abs lights n49 steering angle sensor

F

flip909

New Member

Joined Aug 10, 2016 Messages 6 Reaction score 0 Location Bournemouth England Your Mercedes A160 W168 2002 HI All, Am really stuck and would love some help to avoid overspending on this issue. Mercedes A Class A160 W168 ( so i'm told ) 2002 Error code : C1140-016 Steering angle sensor (N49) Car in LIMP Mode (30Mph Max) Background, Dont know when the lights came on but Battery went flat & car hit a curb. Battery replaced. Tried a simple re-set of steering angle sensor (turn wheel to right left etc.) No Joy. Merc Specialist checked the Star computer readout and came up with the code (C1140-016) He said to check electricity is getting to sensor, if it is, then to replace it. Since the car hit a curb, I am concerned that if the sensor is replaced the lights wont go out and limp mode may remain. Is there a chance that just getting the wheels aligned (tracking done) could fix this issue and I wont need to replace/clean the steering angle sensor? Have searched High and low regarding the ESP/BAS & ABS lights (including this error code) and cant see much regarding a curb collision. Any help would be appreciated. Thanks for your time. Phil.

television

Always remembered RIP

Joined Mar 14, 2005 Messages 164,070 Reaction score 398 Age 90 Location Daventry Your Mercedes 2002 SL500, 216 CL500, all fully loaded Sounds like a wheel sensor but if the car hit the kerb this could have damaged the steering shaft, and the pre load gone, does the steering feel as the there is a little more play than it was, this will bring op code 1140 and consistent with hitting the kerb.

Uncle Benz

Senior Member

Joined Mar 31, 2006 Messages 4,623 Reaction score 4,340 Age 54 Location West Sussex Your Mercedes Mainly Mercedes Where does the steering wheel sit when you are driving on a straight road? If the steering wheel is "pi55ed" the steering angle sensor will record a fault. By all means have the tracking done. Just avoid anywhere that thinks removing the steering wheel and moving it a few splines to get it straight is acceptable. Last edited: Aug 10, 2016 OP F

flip909

New Member

Joined Aug 10, 2016 Messages 6 Reaction score 0 Location Bournemouth England Your Mercedes A160 W168 2002 Hi, Thanks for fast replies! television: Ill check the play when I get home from work. It wasn't a big hit, but probably enough to throw something out. that's why i'm reluctant to spend out on a Steering Angle Sensor at £199 + VAT + labor when I hear that many things could be at fault and throw up this error. Uncle Benz: Ill have a look at the steering wheel to check its aligned. I drove to the garage for the STAR report and didn't notice anything (except the 30Mph!) I was wondering if a hit to the curb could cause the Steering angle sensor to be thrown out (if I was holding the steering wheel tight when the NSF wheel jarred) It doesn't help that I had a battery failure (New battery installed) and a hit to the curb both so close together. I can't remember for the life of me if the lights were on already after battery change but before the curbing.. Really appreciate your help folks My First Mercedes and its lovely (other than this fault) All the best Phil.

television

Always remembered RIP

Joined Mar 14, 2005 Messages 164,070 Reaction score 398 Age 90 Location Daventry Your Mercedes 2002 SL500, 216 CL500, all fully loaded You could go down to MBS in Southampton where Colin is good with these cars. I must admit that I did not know this fault, its in WIS that if the pre tension goes. The actual fault is "insufficient clamping force on the upper screwed knuckle joint in the jacket tube resulting in loss of pre tension in steering shaft bearing. It does say noticeable play in steering column OP F

flip909

New Member

Joined Aug 10, 2016 Messages 6 Reaction score 0 Location Bournemouth England Your Mercedes A160 W168 2002 Didn't notice you were in Dorset too! Lovely part of the world. Took the car to Star-Tech in Poole. He was pretty sure that it was the sensor after the Star Readout. its just a lot of money.. also at £84.40 per hour... they said it would be 1 hour to check if electric was getting there before they ordered part & changed it. scary prices.. Saw people online who have cleaned the SAS and put them back on. was considering this after checking a few cheaper fixes first. Just didn't know if a curbing would affect the SAS or not. Thanks again for help.

television

Always remembered RIP

Joined Mar 14, 2005 Messages 164,070 Reaction score 398 Age 90 Location Daventry Your Mercedes 2002 SL500, 216 CL500, all fully loaded All I can say is what i have said fits the bill for what happened. Do check the steering wheel for excessive free play. MBS are £60 per hour. OP F

flip909

New Member

Joined Aug 10, 2016 Messages 6 Reaction score 0 Location Bournemouth England Your Mercedes A160 W168 2002 Checked for free play in the steering wheel, almost nothing at all. Can hardly feel it. I'm going to drive and check the steering wheel is straight in the morning. Should I check the wheel sensor hasn't been jarred loose or disconnected? Is this easy to locate? Thanks Phil.

television

Always remembered RIP

Joined Mar 14, 2005 Messages 164,070 Reaction score 398 Age 90 Location Daventry Your Mercedes 2002 SL500, 216 CL500, all fully loaded OK so not that fault, the sensor is under the steering column J

jj1975

Senior Member

Joined Sep 18, 2009 Messages 436 Reaction score 3 Location essex Your Mercedes w203 c220cdi 2002

flip909 said: Checked for free play in the steering wheel, almost nothing at all. Can hardly feel it. I'm going to drive and check the steering wheel is straight in the morning. Should I check the wheel sensor hasn't been jarred loose or disconnected? Is this easy to locate? Thanks Phil. Click to expand...

If you hit a curb it may have bend or disturbed any of suspension arms and it doesn't take much for SAS sensor to get wrong signal OP F

flip909

New Member

Joined Aug 10, 2016 Messages 6 Reaction score 0 Location Bournemouth England Your Mercedes A160 W168 2002 I had the tracking done (was out by 3 Degrees) Tried resetting using the right lock and left lock etc. No Joy. How accurate is the Star machine with fault finding? I mean the MB guy at our specialists in town said He would check electric to the steering angle sensor (SAS) and if it was getting power OK, then change that. My mechanic should be about today and I'm not really sure what to do. I was going to ask him to check the electric to SAS then either get to sensor and clean it if dirty (seen a few posts from people who have cleaned them then put back and all is ok) or replace the SAS (kinda expensive) Should I be checking any other things before barking up this tree? I would hate to replace to SAS and still have same fault. Is there a way to tell if suspension arms are bent or disturbed? Thanks for everyone's help on this. making the wrong choice can be costly! Phil OP F

flip909

New Member

Joined Aug 10, 2016 Messages 6 Reaction score 0 Location Bournemouth England Your Mercedes A160 W168 2002 Solved - Replaced Steering Angle Sensor (N49) Hi All, Wanted to come back to let you know this has been solved. Replaced the steering angle sensor and reset it, with right lock, left lock then straight with engine running. Part is listed for 199 + VAT After a few calls back and forth to Euro Car Parts and GSF, got it for 170+VAT Delivered. Easy to replace yourself if you check a few forums, Youtube and www.aclassinfo.co.uk/ (Great little site! Thanks Lofty!) Dash lights now off and car out of LIMP mode. Result! Also Any Electrical problems with ESP/BAS, its worth checking the connector on the ESP unit, under the washer bottle. its position allows it to get wet and damaged easily. Mine was fine but have heard about lots of issues which throw up fault codes. Thanks for everyone's help. All the best, Phil. You must log in or register to reply here. Share: Facebook Twitter Reddit Pinterest Tumblr WhatsApp Email Share Link AIB understand your special Mercedes deserves a special insurance policy. We have a refreshing attitude to insuring high performance, modified, imported or classic and vintage cars and deal with the UK’s leading insurers. We offer discounts for length of ownership, where the vehicle is kept overnight and limiting the mileage and can also cater for those clients who need higher mileage and business use. To obtain a quotation please call the team on 02380 268351 or visit us atAIB Insurance

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