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Hi Joe here,
The problem with your a/c is a sensor. Most likely the pressure sensor. You need to have the vehicle scanned to find out which sensor it is.
AR82.60-P-7502-01A Coding Radio (MODEL all with CODE (750) Radio Becker Europa 2000 with CODE (751) Radio Becker Grand Prix 2000 with RDS)
If the radio is disconnected from the power supply, it is not operational when re-connected. After switching on the ignition and the radio, the readout CODE appears in the display.
The code number for the radio is advised to you on the enclosed CODE CARD.
To enter the first digit of the code number, you have to continue pressing station button 1 until the correct digit appears in the display. Adopt the same procedure for the second, third and fourth digits.
Once you have entered the correct code number with the station buttons 1, 2, 3, 4 and confirmed the entry with the SEEK button (press down), the readout CODE disappears. The radio can now be operated.
If you enter a wrong code three times, you must wait 15 minutes before making a new entry. In addition, if 9 incorrect entries are made, the radio will then not operate for 24 hours. During this time the radio and the ignition (terminal 15) must remain switched on.
AR82.60-P-7502-01B Coding Radio (MODEL all with CODE (353) Audio 30 APS with CODE (510a) Radio MB Exquisit with traffic news decoder, with RDS (Becker) with CODE (512a) Radio MB Special with traffic news decoder, with RDS.)
If the radio is disconnected from the power supply, it cannot be operated by simply reconnecting. After switching on the ignition and the radio the word "CODE" appears in the display on the radio.
The code number for the radio is given on the enclosed CODE CARD.
Enter the code number with the station button, e.g. number 1, station button 1. After entering the first number the word "CODE" disappears and the number entered appears followed by 4 dashes. The next character to be entered flashes. After entering all five numbers, the first character starts flashing again. In this state the code number can be written over as frequently as desired. A correction can be made only by entering the complete code number again.
Confirm code number: Press TUNE, AUTO/SEEK or SC button. The radio automatically switches on and indicates the radio station or frequency stored with station button 1.
If an incorrect code number is entered and confirmed, the word "CODE" appears again on the display. If an incorrect code is entered three times the word "WAIT" appears on the display and the radio locks up for approx. 10 min. If the code is entered incorrectly three times again the radio locks up again for 10 min. Three more incorrect entries (a total of 9 incorrect attempts) increase the lock-up time to 60 min. Another three incorrect entries lock up the radio for another 60 min. The waiting time runs only when the radio is switched on.
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The remote key has a 2 coin batteries fitted. These may have gone flat. Point the keyfob at the car and watching the key press the unlock button. On the key fob there should be a small LED light which blinks. If not, the batteries need replacing. Try this YouTube video. I think they are CR2025 type batteries.
It sounds like a security problem. The same thing happened to a friend. He had to take the key to the dealer. It cost about $125. I think they turned the alarm off.
In some cars, you have to depress the switch a little bit further in to start it. I am not familiar with this Mercedes but it is worth trying. In some cars, the key fob has a disabling mode if the key is not activated, the car will not start.
Try using the second key if you have one. Does the key not working look like it is bent? The ignition cylinder may just be worn to the point that it needs to be replaced.
left tun signal means you most likely ha a bulb blown on that side.turn key on turn on signal light to each side and check your lights out side for one thats not working.
Its sounds like possibly a bad tumbler, Have you tried to wiggle the wheel while tuning the key?
In my experience, Mercedes is pretty tight with there technical information, which kind of forces you to deal with them directly
NOTE: These instructions apply to vehicles that are currently due a scheduled service. Manual resetting of the service interval indicator may not be possible if the time or distance covered is outside the programmed parameters of the vehicle. In this case, it may be necessary to use manufacturer's or equivalent diagnostic equipment. Switch ignition ON and immediately press button [A] twice 42039. Switch ignition OFF. Press and hold button [A] while switching ignition ON. After 10 seconds the new interval will appear in the display accompanied by a beep. Release button [A]. Switch ignition OFF.
Hi Joe here,
The problem with your a/c is a sensor. Most likely the pressure sensor. You need to have the vehicle scanned to find out which sensor it is.
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