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Stephen Rothwell
Stephen Rothwell,
Category: Mercedes
Satisfied Customers: 129
Experience:  Director at Steve Rothwell Limited
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When you try to start car i insert key but everything is

Customer Question

when you try to start car i insert key but everything is dead. i have tried using different key and same thing happens. it mainly happens when car is cold. I may try to turn key several times and nothing happens. then for some reason the car starts .
JA: Is the Mercedes in "Park" or "Neutral?" Do you know if your Mercedes has a "wheel lock" feature?
Customer: car is in p e class merc not sure if has wheel lock
JA: What year is your E Class?
Customer: 2012
JA: Are you fixing your E Class yourself? What have you tried so far?
Customer: sorry car is s class
JA: Anything else you want the Mechanic to know before I connect you?
Customer: no
Submitted: 9 days ago.
Category: Mercedes
Expert:  Nicola-mod replied 9 days ago.
Hello,

I've been working hard to find a Professional to assist you with your question, but sometimes finding the right Professional can take a little longer than expected.

I wonder whether you're ok with continuing to wait for an answer. If you are, please let me know and I will continue my search. If not, feel free to let me know and I will cancel this question for you.

Thank you!
Nicola
Expert:  Stephen Rothwell replied 7 days ago.

Hi

Thank you for your question and sorry for the wait you have had. My name is Steve and i am a fully qualified vehicle technician with over 30 years in the trade. hopefully I can answer your question.

The Mercedes ignition lock consists of three components. The key, the receiver and the steering lock.

When you place your key into the ignition you should hear a click as the steering lock is released, if the steering lock does not release then the ignition circuit cannot be completed. The steering lock can and does fail resulting in the steering remaining locked. When this happens it is difficult to remove the steering lock section. This is located at the base of the steering column.

The problem can also be with the receiver or the key not communicating correctly. Unfortunately the system is know to suffer from problems and does need to be coded when replacing any of the three ignition / steering lock components. This needs to be done with the Mercedes STAR system although some independent auto locksmiths will have the equipment.

Because your ignition is still working, albeit intermittently I suspect that the fault is in the electrically operated steering lock mechanism.

I would advice getting this diagnosed as soon as possible by a garage who have the STAR diagnostic system, as it will be easier to replace any faulty component whist the system i still operating.

I hope this answers your question, and again sorry for the wait.

If this does answer your question please click accept and rate me, this allows me to continue. Even after you have clicked accept I can continue to answer questions on the problem.

Many Thanks

Steve