So I just bought a 2014 e350 and it has a power steering malfunction as well as interior lights don’t work and infotainment system either and the steering is hard I can’t drive it I have these codes from my scanner and I need to be pointed in the right direction the power steering rack was replaced as well as the alternator is good and I changed out the main and auxiliary battery and entire front fuse box please if anyone knows the issue would be really helpful

 

Hard faulty STEERING lands in the ballpark of dangerous collision...

It's not currently clear what is disrupting your new rack operation. The rack is self-reliant with an internal steering input shaft sensor.

Many valuable parts were replaced with limited results. Now its time for some troubleshooting.

A full chassis scan should be used to have a better chance at diagnosing this right. If not then you will be up for a Xentry job. Let's see what other modules are acting up...

Needless to say you did check the rack harness-side connections are free of oxidation crusties.
(disconnecting logs faults!)

Did "replacement rack" get coded or just bolted on??

2x racks can't be bad, right?

 

Related to your use of AUTEL Scanner...
FYI: This scanner will give a rack communication fault with engine is not running... meaning its a sort of "false fault" caused "operator error" condition.

Run the engine to enable normal RACK functions over CAN + STERRING WHEEL response.

"IGN:ON + ENG:OFF" = Non responding rack - Normally expected!!

Why... this generation of Racks are power hogs that requires high power from engine running ALT, not battery only.

 

Ok I changed the aux battery out now only have 1 code how can I fix this








QUOTE=CaliBenzDriver;9264361]Related to your use of AUTEL Scanner...
FYI: This scanner will give a rack communication fault with engine is not running... meaning its a sort of "false fault" caused "operator error" condition.

Run the engine to enable normal RACK functions over CAN + STERRING WHEEL response.

"IGN:ON + ENG:OFF" = Non responding rack - Normally expected!!

Why... this generation of Racks are power hogs that requires high power from engine running ALT, not battery only.
[/QUOTE]

 

This non responsive fault message makes it sound your new rack is dead as door nail - Two in a row is uniquely....

-1- RACK Module reports "implausible Signal"
-- Confirm the ENGINE is RUNNING during the rack evaluations. (NO Batt status involved with rack)


-2 - Read rack live data PID with your Autel:
-- what do you (not) get ?


-3 - What happened to the first rack to initiate errors ?

 

It’s a new OEM rack and pinion not sure why it should be causing problems and I’ve heard it needs to be programmed to the car is that true because that wasn’t done and if it is what scanner can I use to program

 

Also when I scanned and tested the engine was off and ignition was on

 

As explained... Rack assist is inactive without ENGINE RUNNING!

 

This requires an active Xentry system or a professional scanner with active subscription.
(Not just a $150 handheld scanner).

 

these are with engine run guns and codes and the voltage goes up to 14 which is good what does this mean I have a fuse problem or what









QUOTE=CaliBenzDriver;9264386]As explained... Rack assist is inactive without ENGINE RUNNING![/QUOTE]

 

[/QUOTE]

what makes you think you have a fuse problem?


this is showing battery voltage... 12.56V

You do get ALT voltage right?
near 14.5V, true?

These data screens validate rack module is exchanging CAN data, at least some data.

WITH ENGINE RUNNING, Tranny in Park:
does you steering work as it should?
Clear faults and rescan chassis to collect fresh error report

 

I'm sure it's not the rack and pinion or the alternator but i would have to see it in person to know more

 

Is this your first Mercedes?

 

try this;