Key will not start auto 1996 mercedes what to do nothing happens when try to start car does it need new key or new ignition how to fix this problam

I just went through this two days ago. You probably need a new ignition. What happens is these cars lose connection for some reason to the chip in the key and it can't be fixed with just programming. It has to be a whole new ignition. Mercedes are so much different then to any American car. Good luck and it costed around 950 to fix in Wa state.

Try checking the key reader it's usually a plastic ring around the key barrel. If it's dies will not read code in key to enable the car to start. Check your key is sending a code as well.

when you try to start it what happens is there a click noise, nothing or does it turn over but not start?

SOUND LIKE PROBLEM THE KEY WORN OR LOCK CYLINDER COULD BE BROKEN .I WOULD CODE SCAN FOR FAULTY IMMOBILIZER MODULE OR KEY SWITCH COIL OR TRANSPONDER KEY.THE WAY MERCEDES BENZ GOT IT SET UP.IF IGNITION KEY AND LOCK CYLINDER ALSO IMMOBOLIZER MODULE HAS TO BE REPLACED THEY HAVE TO REPLACE AND REPROGRAM NOT A HOME FIX. THEY HAVE TO USE DIAGNOSTIC EQUIPMENT TO REPROGRAM KEY SWITCH AND IMMOBILIZER.

one possibility could be the ignition switch itself also when you ordered the new key did they order a replacement key or an additional key. an additional key will work right away. a replacement key has to sit in the ignition switch for awhile before it can turn into the first position and then it will take awhile before it will turn to the second position. this is because the key and ignition switch use a rolling code type security system. it changes every time the car is started. so it could take awhile for the new key you got to syncronize with the ignition switch. hope this helped

I suggest you try one of those instant download manuals. My brother ( a mechanic) buys it when he can't fix some technical issue He buys from www.reliable-store.com .
A lot of mechanics actually do this. Website is very good for this. Must try it !!

When Automatic Transmissions completely fail; It is not a bad thing: all you need do is get the transmission fluid moving again and. doing it's job.
So; all you need do is change the transmission fluid filter.

hello,good day,seems your starter is not working,if you have a auto. trans. try to back and fort the trans. lever.or try to put in neutral,then try to start,if not, check your solenoid switch (on top of starter motor) if have voltage while you are in starting position,hoping your battery is full charge ,ty

Sounds like your alternator isn't doing its job. I would have an auto parts place check the alternators' output. Good luck

Hi

I take it you mean it will not turn the steering lock ?

If so, try turning the steering wheel sharply to the left, and then to the right, whilst operating the ignition key to the start position.

I hope this is of assistance to you.
Let me know if this does not help.
Good Luck !
John.