We installed an NPE 240 S unit and it has a red m with arrows around it. Where can I find whayt that means

When was the last time that you had the transmission serviced? Sounds like something is plugging the valve body.

ARROW POINTING DOWN THAT A LOW COOLANT WARNING LIGHT.THIS WARNING MEAN ADD COOLANT QUICK AS POSSIBLE OR THERE WILL SEVERE ENGINE DAMAGE.

traction controll issues

Make sure the red wire on the unit is hooked up to power. The blue antenna wire is hooked up (or to the factory amplifier) and the yellow wire on the radio is hooked up to a key on power supply. If it works and you lose the memory when you shut the key off, switch the red and yellow wire power supplies.

When the button is pressed and the arrow indicator light is on the overdrive gear is not being used and you only have 3 speeds. When the button is pressed and the light is off you have overdrive. Normal use you should not see the arrow.

You need to replace the overdrive relay located inside the center cosole on the right side about even with the blower switch.

More likely that the solenoid in the transmission is shorted to ground. Has any new electronic equipment been installed recently, like stereo, alarm, etc?

Means the overdrive is disengaged. There should be a button on the side of the shifter. If pressing this does not engage the OD, then you may need to replace the OD solenoid.

Hi,

If you hear a whirring sound followed by a click (or series of clicks) when trying to eject a cassette, then you probably have a broken tape which has wrapped itself tightly around the first spindle, thereby preventing the cassette bed from raising to the eject position.

That was the problem a few days ago with my father's Becker Audio 10 unit fitted in his E240.

You will need a set of removal tools (see photo 3), a flat bladed screwdriver, a small cross-head screwdriver, a scalpel (the latter's small sharp blade is needed to get into the confined space and cut away the offending tape) and, possibly, a small Torx driver.

1
Remove the unit from the car using the removal tools and disengage the antenna plug and the two electrical connector blocks (1 x single and 1 x double) from the rear of the unit.

2
Using the flat-bladed screwdriver, carefully prise the top cover away from the unit - I started at the back on either side and then slowly drew the screwdriver forwards until enough of the top cover had been raised to allow me to grasp it and pull it free.

3
Remove the small, black, cross-head screw (circled in red and marked 'C' on photo 1) nearest the front of the unit and then remove the plate it is securing by lifting and moving to right (to disengage it from the securing pin (indicated in red on photo 1).

4
Remove the small, black, cross head screw (also circled in red) towards the rear of the unit. It is now possible to remove the side fence by carefull manipulation, disengaging the lugs and pin indicated by the red arrows on photo 2. TAKE CARE NOT TO DAMAGE THE RIBBON CABLE indicated in blue on photo 2.

5
The broken tape wrapped around the spindle will now be visible (the approximate position is indicated by the blue disc with a white X on photo 1). Use the scalpel to carefully cut away the tape from the spindle - this could take several minutes depending upon the amount of tape and how tightly it has been wound.

If greater access is needed, remove the Torx screws (circled in red and marked 'T' on photo 1) to partially disengage the cassette sub-assembly. It will remain connected the the printed circuit board at the rear so care should be taken not to move it excessively.

Once the damaged tape has been cut away the eject mechanism should function normally once more.

Reverse the forentioned procedures, secure the top cover and re-install unit, remembering to have the code card handy!

I can't suggest any solution for the autochanger.

Best of luck,

JC