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I have a cls 500...i had a battery change and have had

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Hi, I have a cls...
Hi, I have a cls 500...i had a battery change and have had problems with abs/sbc with warning on dash in red reduce braking power and car won't come out of park
Submitted: 1 month ago.Category: Mercedes
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3/12/2018
Mercedes Mechanic: Lou P. master tech, Mercedes Technician replied 1 month ago
Lou P. master tech
Lou P. master tech, Mercedes Technician
Category: Mercedes
Satisfied Customers: 5,730
Experience: 20 years Master Certified excellent fix rate and have access to factory wiring, and instructions.
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Hello, my name is***** and i will do my best to assist you.I am going over your story now and will reply back soon with some info,thanks!

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Mercedes Mechanic: Lou P. master tech, Mercedes Technician replied 1 month ago

did you change the battery because of this issue?

was the issue there before and after the battery?

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Customer reply replied 1 month ago
Hi...no I had no issue before...battery was changed only because old battery went flat
Mercedes Mechanic: Lou P. master tech, Mercedes Technician replied 1 month ago

ok good deal.

so do you have a scan tool to read the codes ?

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Customer reply replied 1 month ago
codes I have are:
Sbc: c226f c254f c258f
Esp: 5b16
Gear box: p2000 p2010
Mercedes Mechanic: Lou P. master tech, Mercedes Technician replied 1 month ago

ok,

let me check those,

I am pretty sure you have 2 issues, 1 is the sbc needs replaced. and the other I will see with the codes.,

please give me a little time , also may i have your vin.

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Customer reply replied 1 month ago
WDD2193752A016043
Mercedes Mechanic: Lou P. master tech, Mercedes Technician replied 1 month ago

C226F Control unit A7/3n1 (SBC control unit), internal fault

C254F Control unit A7/3n1 (SBC control unit), internal fault

C258F Control unit A7/3n1 (SBC control unit), internal fault

this sbc unit is faulty or the ground to it is faulty

5B17 Event:CAN communication to control module CGW is faulty.

there is a can issue .

hmm, let me check the wiring diagram.

you should have had more codes if there is a communication error.

let me see what the issue can be.

Lou

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Customer reply replied 1 month ago
I just see this code 9034 from drivers side sam
Mercedes Mechanic: Lou P. master tech, Mercedes Technician replied 1 month ago

ok gotcha.

so do you know where the esp control unit is located? near the drivers side fuse box?

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Mercedes Mechanic: Lou P. master tech, Mercedes Technician replied 1 month ago

we need to check the following,

fuses, and then power and ground at module and also to see if water got inside of module.

i will tell you which fuses.

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Mercedes Mechanic: Lou P. master tech, Mercedes Technician replied 1 month ago

fuse 47 in front sam/fuse box is for the esp

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Mercedes Mechanic: Lou P. master tech, Mercedes Technician replied 1 month ago

with the scanner doe it show a ! next to the esp or can you not talk to the esp module?

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Customer reply replied 1 month ago
Fuse 47 Is ok...and no ! On scanner next to esp
Mercedes Mechanic: Lou P. master tech, Mercedes Technician replied 1 month ago

ok, can you talk to esp with scanner?

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Mercedes Mechanic: Lou P. master tech, Mercedes Technician replied 1 month ago

by talk, i mean can you see live data and any dtc even if it shows no dtc?

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Customer reply replied 1 month ago
I can get love data
Customer reply replied 1 month ago
Live*
Mercedes Mechanic: Lou P. master tech, Mercedes Technician replied 1 month ago

ok, so there is a small 2 pin green connection on the esp.

can you see it?

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Customer reply replied 1 month ago
in the middle
Mercedes Mechanic: Lou P. master tech, Mercedes Technician replied 1 month ago

ok, unplug it, check it for voltage, you should get 2.5 or so on each.

also with it unplugged see if you can still talk to the esp

if my suspicion is correct you should still be able to talk to it.

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Customer reply replied 1 month ago
2.65 one side and 2.30 other side
Mercedes Mechanic: Lou P. master tech, Mercedes Technician replied 1 month ago

ok so those are the data lines, that means that we have good connection .

can you still communicate with esp with those unplugged?

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Customer reply replied 1 month ago
Il try now...the beeping has stopped on dash now that's unplugged
Mercedes Mechanic: Lou P. master tech, Mercedes Technician replied 1 month ago

ok

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Customer reply replied 1 month ago
No will not respond now to esp
Mercedes Mechanic: Lou P. master tech, Mercedes Technician replied 1 month ago

ok, unplug the other 2 bigger connections, look for water entry or bent pins.

also the connections are 2 piece, they pull out wards as they move up, hard to explain.

but lets disconnect, inspect and reconnect. and see what happens.

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Customer reply replied 1 month ago
Ok back in a sec
Customer reply replied 1 month ago
Removed all looks dry and pins straight
Mercedes Mechanic: Lou P. master tech, Mercedes Technician replied 1 month ago

ok, reconnect and see what happens if anything.

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Customer reply replied 1 month ago
Still the same
Mercedes Mechanic: Lou P. master tech, Mercedes Technician replied 1 month ago

ok, i think the esp module is faulty.

you have good connection, you have proper voltage.

the only thing left is to verify power and ground.

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Mercedes Mechanic: Lou P. master tech, Mercedes Technician replied 1 month ago

and honestly per the diagram with the can connection disconnected you should still be able to diagnose the module because the same wire is connected to the sam.

so that is odd, that also tells me the esp is faulty.

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Customer reply replied 1 month ago
Would that effect the sex and gearbox
Mercedes Mechanic: Lou P. master tech, Mercedes Technician replied 1 month ago

lol, yes because the speed of the car goes through the esp

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Customer reply replied 1 month ago
Sbc*
Mercedes Mechanic: Lou P. master tech, Mercedes Technician replied 1 month ago

sbc and esp work together, but i would triple check power and grounds.

the power on the esp i will tell you give me a moment.

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Customer reply replied 1 month ago
Lol
Customer reply replied 1 month ago
Thank you
Mercedes Mechanic: Lou P. master tech, Mercedes Technician replied 1 month ago

you seem very knowledgeable, I will just send you over the diagrams. if that would be easier.

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Mercedes Mechanic: Lou P. master tech, Mercedes Technician replied 1 month ago

here is the diagnostic line and fuse from the front sam.

let me know if you need anything else.

my thoughts are the esp and sbc are faulty UNLESS you find a power an ground loss.

I will do what I can to help if you have any more questions,

Lou

Please take a second and click the stars at the top of the screen to rate my service so I may be paid for my assistance.5 stars is ideal :) . Please save me as a favorite and request me in the future. Keep in mind that when you rate it does not end our conversation, all it does is pay me for my help. You can still return here to me for follow up information if needed just simply reply back. If you feel I have earned one, BONUSES are GREATLY APPRECIATED, Thanks!
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