Question about 1999 Chrysler 300M

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1999 chrysler 300m heater/air conditioner display console lights

The heater/airconditioner display console on my 1999 chrysler 300m is acting real flakey... the switchs work ok but the display unit does not light up to show the position of the switchs... the other morning it was quite cold about 20f and they came on. as soon as the temperature outside warmed up the display stopped working. Is there a wiring diagram or description of the wiring contacts available so that I could check to see if the wiring contacts need to be cleaned?..

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  • lawtonaj Feb 24, 2009

    My heater keeps blowing the fuse so the display goes off. I am also getting the same problem with my instrumentation/rear tail lights fuse. I tried to chase the wiring but got too hard. Anyone know where a likely spot would be to check for the problem?

  • jfw6410 Mar 10, 2009

    I ahve the EXACT same problem with my 2001. Everything works but the display is out and it comes on briefly on mornings when it is extremely cold. I took it apart and noticed a small burn mark in the top right corner ( the area is not visible unless the trim cover is removed)

    My guess is it needs to be replaced.

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6 Suggested Answers

  • 599 Answers

SOURCE: My 2000 chrysler 300m is

it is the heater core failing ..not the a/c ....pressure test radiator (cooling system) to be sure ... then R&R heater core...good luck

Posted on Nov 20, 2008

  • 99 Answers

SOURCE: 2000 Chrysler 300M. Gauges and controls not working

how about if you disconnect the battery for 10 sec and reconnet. if no fix look for blown fuse under the hood look also near the steering column for more fuses

Posted on Jul 21, 2009

  • 4044 Answers

SOURCE: 1999 chrysler 300m wont crank, code P0340

Sounds like the timing belt broke. Unfortunately this vehicle was not equiped with no contact valves so if that is the case you will need to have the engine and Head rebuilt. If the crank position sensor can't sense the position of the crank it should shutdown the electrical to keep you from damaging your engine.

Posted on Oct 09, 2009

wracefans24
  • 1985 Answers

SOURCE: My heater doesn't work. Hot water is circulating,

if both heater hoses going into the fire wall are hot,remove the heater control assembly from dash and make sure cable is connected and do the same under the hood where one heater hose has a valve connected to it,

Posted on Dec 15, 2009

wracefans24
  • 1985 Answers

SOURCE: How to I remove the climate control display unit

the light bulb is not replaceable,it is internal.

Posted on Jan 20, 2010

Testimonial: "Clear, simple-to-understand advice. I really appreciate all the contributors who take the time to help clueless guys like me!"

c17hydro
  • 2984 Answers

SOURCE: need to replace a idle air control valve on a 1999 300M Chrysler

Removal & Installation

  1. Disconnect the negative battery cable.
  2. Disconnect the IAC electrical connector.
  3. Remove the IAC mounting screws.
  4. Remove the IAC.



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To install:
  1. Install the IAC to the throttle body.
  2. Tighten mounting screws to 5.1 Nm (45 inch lbs.) torque.
  3. Attach electrical connector to the IAC.
  4. Connect the negative battery cable.
  1. Disconnect electrical connector from IAC motor.
  2. Disconnect air plenum (where applicable).
  3. Remove two mounting bolts (screws).
  4. Remove IAC motor from throttle body.

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To install:
  1. Install IAC motor to throttle body.
  2. Install and tighten two mounting bolts (screws) to 60 inch lbs. (7 Nm) torque.
  3. Install electrical connector.
  4. Connect air plenum (where applicable).

Posted on Mar 06, 2010

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1 Answer

Air conditioner display screen doesn't light up


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  • Hope this helps and thank you for using FixYa.

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