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It says my pre-safe is inoperative and many other features…

Customer Question
It says my pre-safe...

It says my pre-safe is inoperative and many other features aren't working either

Mechanic's Assistant: What is the model/year of your Mercedes?

2014 E350

Mechanic's Assistant: Are you fixing your E350 yourself? What have you tried so far?

No just just happened I'm trying to understand if it can be reset

Mechanic's Assistant: Anything else you want the mechanic to know before I connect you?

Not that I can think of

Submitted: 6 months ago.Category: Mercedes
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Answered in 5 minutes by:
1/5/2018
Mercedes Mechanic: Chad Farhat, ASE Certified Technician A6 - Electrical / Electronic systems A7 Heating / Air conditioning systems replied 6 months ago
Chad Farhat
Chad Farhat, ASE Certified Technician A6 - Electrical / Electronic systems A7 Heating / Air conditioning systems
Category: Mercedes
Satisfied Customers: 5,651
Experience: Owner at Carolina Auto Service & Sales , 20 years experience in Foreign & Domestic vehicles
Verified

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

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Mercedes Mechanic: Chad Farhat, ASE Certified Technician A6 - Electrical / Electronic systems A7 Heating / Air conditioning systems replied 6 months ago

Hey how are you,I will try to help you with this issue

if this is the first time it happened lets try resetting using below procedure

Master reset Procedure

1- Disconnect Battery Cables ( Negative & Positive Cables )you can use any electrical wire as an extension if battery cables don't reach .the reason we do that is to take any residual power in the wiring harness to try to reset the modules ,and there will be no spark created touching them since we took battery power source out of the loop by taking both cables off

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

3- Wait 30 minutes

4- Make sure all doors are closed

5- Reconnect battery Cables ,Positive cable First

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

if that does not work ,

You will need a factory scanner or equivalent to run a diagnostic scan & retrieve fault codes from the Vehicle modules and based on these fault codes we can pull up a Pin Point troubleshoot
and be accurate on it ,If you do get it scanned ,you can post the fault code back here for me and I can help you further on it and be more accurate .

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Thank You

Chad Farhat

ASE Certified Technician

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Mercedes Mechanic: Chad Farhat, ASE Certified Technician A6 - Electrical / Electronic systems A7 Heating / Air conditioning systems replied 6 months ago

Please Take a Second and Click the Stars at the Top of Your Screen To Rate Me , So I May receive My my Credit , A 5 Stars Rating is Much Appreciated

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Chad Farhat, ASE Certified Technician A6 - Electrical / Electronic systems A7 Heating / Air conditioning systems
Category: Mercedes
Satisfied Customers: 5,651
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Experience: Owner at Carolina Auto Service & Sales , 20 years experience in Foreign & Domestic vehicles

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