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Ask Chad Farhat Your Own Question
Chad Farhat
Chad Farhat, ASE Certified Technician A6 - Electrical / Electronic systems A7 Heating / Air conditioning systems
Category: Mercedes
Satisfied Customers: 2287
Experience:  Owner at Carolina Auto Service & Sales , 20 years experience in Foreign & Domestic vehicles
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I took my Mercedes-Benz 2011 C class through the automatic

Customer Question

I took my Mercedes-Benz 2011 C class through the automatic carwash now but Car's instrument panels and everything on the car is going crazy and now the car won't start any ideas
Submitted: 6 months ago.
Category: Mercedes
Customer: replied 6 months ago.
its poping codes p0607 Control modular performance and u0155 Lost communication with instrument panel IPC troll modular and p0073 ambient air sensor circuit too high
Customer: replied 6 months ago.
it looked like water had gotten into the fuse box opened up the hood and saw water on top
Expert:  Chad Farhat replied 6 months ago.

Hi, I'm Chad ,Welcome To JustAnswer, I'm reviewing your question and I will be posting a reply ASAP

Customer: replied 6 months ago.
ok
Expert:  Chad Farhat replied 6 months ago.

open the box and use shop air to clean the water first, i mean you need to dry it good, even if you have to pull fuse one by one and clean the socket where they go in .?

when it is dry ,then clear your codes and try again or do this master reset , but you will need the radio code after reconnect

where any of these fault codes exist before ?

the U0155 is communication code, but all these are collateral fault codes set because of water,we need to clean and see what comes back if any and then we can address the fault codes left

Master reset Procedure

1- Disconnect Battery Cables ( Negative & Positive Cables )

2- Hold cables Together for 60 secs ,then let go

3- Wait 15 minutes

4- Make sure all doors are closed

5- Reconnect battery Cables

6- Lock & unlock the vehicles using the key from driver door side (if you have a key fob with no blade key, just lock & unlock using the key fob buttons)

7- Enter the vehicle and attempt to start

Please let me know

Thank You

Chad Farhat

ASE Certified Technician

Expert:  Chad Farhat replied 6 months ago.

you can buy a can of electrical contact cleaner from your local auto parts store and clean that fuse box with it

Expert:  Chad Farhat replied 6 months ago.

Hi, I'm Chad ,Welcome To JustAnswer, I'm reviewing your question and I will be posting a reply ASAP

Customer: replied 6 months ago.
OK we're doing it now we put the table together sucking out the water I'll let you know if it
Customer: replied 6 months ago.
works
Expert:  Chad Farhat replied 6 months ago.

hey sorry are you getting my reply, my screen went blank , so i m not sure if you received it

can you let me know

Ok sounds good

Chad

Expert:  Chad Farhat replied 6 months ago.

2011 Mercedes Benz C 300 (204.054) V6-3.0L (272.947)

Save Article

B14 (Ambient temperature display temperature sensor) : No CAN message. (U0155) Possible cause: - Check the CAN communication with control unit A1 (Instrument cluster). - Chassis CAN bus - Central CAN bus Affected functions: - CAN Communication

2011 Mercedes Benz C 300 (204.054) V6-3.0L (272.947)

Save Article

Component B14 (Ambient temperature display temperature sensor) has a short circuit to positive. (P0073) Possible cause: - B14 (Ambient temperature display temperature sensor) Affected functions: - Power generation

2011 Mercedes Benz C 300 (204.054) V6-3.0L (272.947)

Save Article

Control module has an internal error. (P0607) Test 1: Test control unit. Test 2: Possible cause: - Test control unit. Affected functions: - Engine diagnosis 1. Test control unit. Test control unit. Possible cause and remedy - Erase fault memory and start engine. - Reread fault memory of control unit N3/10 (ME-SFI [ME] control unit).If fault reoccurs, replace component N3/10 (ME-SFI [ME] control unit). Read coding and transfer to the new control unit.End of test 2. No further information available.

Customer: replied 6 months ago.
ok trying
Expert:  Chad Farhat replied 6 months ago.

ok

Customer: replied 6 months ago.
we tryed but did not work any other suggestions
Expert:  Chad Farhat replied 6 months ago.

is it turning over or none when you turn key ?

scan it now after battery disconnect what fault codes are there now ?

Expert:  Chad Farhat replied 6 months ago.

did you time it 15 min on disconnect ?

Customer: replied 6 months ago.
i did
Customer: replied 6 months ago.
let me check
Expert:  Chad Farhat replied 6 months ago.

Check all fuses in the side fuse box

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Expert:  Chad Farhat replied 6 months ago.

he main one under hood please

Thanks

Customer: replied 6 months ago.
it still shows a P0607 control modular performance and they ambient air temperature sensor circuit to high P0073
Expert:  Chad Farhat replied 6 months ago.

UNPLUG THIS MODULE AND CHECK FOR WATER IN THE CONNRECTOR

Expert:  Chad Farhat replied 6 months ago.

the p0607 is the issue, the p0073 , that is an ambient temp sensor sensor want hurt us now , we can address it later after it start .

Customer: replied 6 months ago.
we found a 15 amp fuse blown in the fuse box in the trunk on the purple slat
Expert:  Chad Farhat replied 6 months ago.

ok good change it

Customer: replied 6 months ago.
do you have any ideas on what it does the 15 amp it's in the purple rack in the back of the trunk the third one down
Expert:  Chad Farhat replied 6 months ago.

does this look like the fuse box?

tell me which number it is ?

Expert:  Chad Farhat replied 6 months ago.

sorry are you trying to call me ?

i saw that on screen

Customer: replied 6 months ago.
fuse number 55 are you can call me(###) ###-####
Customer: replied 6 months ago.
heres the fuse
Expert:  Chad Farhat replied 6 months ago.

i m trying to call you the system want let me ,trying to fix it .

do you see a rating box grayed out or do you see it open now ?

do you have another fuse to replace with that 15 amp for now ?