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Chrysler 300M Care and Maintenance



  • The battery is located down in the right fender. You first remove the louvered plastic wheel house panel - good luck getting it off! The screw clips go flying all over when you try to wrestle it off from the rest of the plastic wheel house. Then remove the air cleaner housing by removing the intake hose from it and then pulling up on it then to the left of the car. Now disconnect the one exposed battery terminal. BE VERY CAREFUL, as I recall, all that you have access to is the Positive terminal. Disconnecting the positive terminal first is dangerous, you should always disconnect the negitive first but it isn't accesible until you slide the battery halfway out the right front wheel well. Then remove the battery hold down. NOW you can finally slide the battery aft thru the access hole in the wheel well. In order to slide the battery out, the front tires must be turned all the way to either the left or the right, sorry but I forget which way. Finally, disconnect the other battery terminal and remove it down and out of the wheel well.

    Install the new battery in reverse procedure. Good luck getting that louvered access panel back in place on the wheel house liner. Everytime you move it to line up the screw holes, 2 screw clips go flying somewhere!. If this whole thing sounds like a real chore, it certainly is.
  • darla2darla2 Posts: 1
    Any recommendations for servicing my '99? Its at 250,000 KM.
  • garyc04garyc04 Posts: 1
    I have a 99 Chrysler LHS. Had a temporary instance of "limp mode" yesterday, but it went away. I would like to change out the input and output sensors as a PM. Could you please share the part numbers and give a general idea as to location. Sounds like I should be able to do the R&R myself.

  • gdchappellgdchappell Posts: 1
    I have a 2000 LHS. Just had a full brake job done (not at the dealer) and now stopping is an adventure. When you need the brakes the most it seems as if they turn into mush. Before the brake job, I had good braking... the only reason I had the brakes done is I detected a very small amount of scoring on a rear rotor. Other than that, the car would haul down quite nicely even with the scoring.

    Could the culprit be those after-market pads you are referring to?
  • my300mmy300m Posts: 6
    I've been reading allot about draining and filling with and without the benefit of the drain plugs and the different ways of draining which is all very informative. However, has anybody ever done a coolant flush? I'm going attempt a coolant change tomorrow on my 2000 300M but I would like to flush the system first before filling since I'm willing to bet has never been changed before.

    My idea of a flush would be be drain, fill up with tap water only, run engine, cool engine, drain and repeat a couple of times followed by a final fill with distilled water and coolant. I will only use tap water if I can gain access to the drain plugs, otherwise I'll use distilled water...or maybe use distilled water the last fill and drain before doing the final fill which I will use distilled water.

    I may be way off base, therefore, any insight would be appreciative.
  • Speed sensor is located inside the gas tank along with the fuel pump, pump assembly, and fuel filter it is all on unit. You have to get the unit from the 5* I had my mechanic do it and it cost me about $550. You can do it yourself but it's a REAL PAIN in the A**
  • mshermsher Posts: 5
    Just buy the brake pads good quality. It seems you have cheap pads which produce a lot of dust while braking.
  • mshermsher Posts: 5
    you can dowload Chrysler service manual for LH platform from
    you will find all the info there.
  • Has anyone heard of a way to remove scratches in the head light lenses?
  • WOW!
    I have a '99 w/ 116K miles...continue to spend $$ on the necessary maintenance and fixing of failed components.

    I have a leak in 2 of the high pressure lines from the trans....the dealer claimed it was a $400 fix....I think I'll live w/ the small leaks.

    The A/C compressor is howling....system failure must be on the way.

    My rear window does not says to count on $400 to fix that....

    The passsenger side auto lock actuator buzzes very loudly when locking the kids just give me the blank stare when they are riding in my vehicle.....I know what that are thinking but.....I think it's a keeper!

  • laurasdadalaurasdada Posts: 3,112
    Wow, indeed! Had I kept my '99, I'd "only" have about 75,000 miles on it by now! Glad you still love your M, I really enjoyed mine and miss it. But my '05 TL makes me just as happy!

    Especially with 7 coats of Zaino applied!

    '13 Jaguar XF, possibly my favorite of all the cars I've owned. But, my '09 Jag XK was a beauty, as was my '05 Acura TL, '88 Acura Integra, '84 Mitsubishi Mirage Turbo & '78 VW Scirocco (my first!). And, of course, the '92 Nissan Sentra SE-R and '95 Saab 900s I bought for the ex... Ok, I like a lot of the cars in my life.

  • Can someone tell me what the procedure for removal of the left rear door panel on a 2000 300M is other than the 3 screws at the bottom and the 1 in the cup?
  • gsloatgsloat Posts: 2
    I am the owner of a 2000 300M, I went to hibdon's to ck the balance of front tires. To my dismay I was quoted close to $600 to replace both inner tie rods/or bushings/rack and pinion bushings. Bottom line is they didn't know. I believe I can replace cheaper by doing myself. I don't know how! Can someone who has done this before please help me? Sincerely frustrated 300m owner!!!
  • tr3323tr3323 Posts: 1
    Hi Seeburg -
    New to this site and need some advice. My husband successfully replaced the battery yesterday in my 2000 300M, and now the manual heat automatically comes on full blast repeatedly after being turned off. 5 seconds after turning it off it comes on again (great in June!). I checked the manual and it says nothing about this. I'm wondering if something has to be reset? Another problem that is probably unrelated is that I have no AC - Had it charged up last summer and it only lasted a few weeks and I've been putting off the inevitable of costly AC replacement. Any ideas on the constant heat problem? Thanks!
  • Hi tr3323
    sorry for my english, i am from italy
    hi have the same problem as you
    first of all my ac go down . i charged it and after 1 week
    it returns off.
    thanks to let me know :mad:
  • ok if you have the automatic climate control to do a self diagnostics on it which will cause it to run through all it's systems you need to. set the temp to 75 press and hold the floor,mix and defrost all at the same time. until the display blinks then release the bottons. It will then go through all the system funtions and bring back any trouble codes that it finds if any. let me know if it finds any and I'll give you what it means. I hope that this helps!!! Jonathan
  • Hi I have a 1999 300m and I have had two electrical problems that needed to be fix per the maintenance guy. Now my car stopped on me while I had my foot on the brakes at the light. And when I tried to crank it again the engine whould not catch it would try to but would not turn over. I suspected that my gas pump died on me because when i sprayed some starter fluid in the valve it turned over for about 10sec then cut off. So I bought a fuel pump from napa and replaced the old one but it didn't look just like the original. And I put it in anyway. Tried to crank it and it seemed like it was going to start once I sprayed some starter fluid in it again. But no luck. It's doing the same thing it was doing when it cut off on me at the light. Anyone have any ideas on how to fix this problem.

    Thanks for your help
  • xray01xray01 Posts: 6
    Hi! I am new to this message board, and noticed this message, Went to the site cannot be found. Any place else to get the Repair Manual On CD?

    xray 01 :) :confuse:
  • Dear Seeburg,

    I need a lot of help, with more details regarding changing the battery. Ok, I removed the air intake hose from the air filter but I don't see any screws for the air filter housing unit so how does it come off? It looks attached? Also, what is the louvered plastic wheel house panel? Where is it? Is it part of the front bumper? I have a 2000 Chrystler 300M and have never owned a car where removing the battery is such a hassle. I am so frustrated I am ready to sell it. Please help me and the more details, the better. Also, if you have any diagrams that would help. My e-mail is what is yours? Thanks.
  • jayriderjayrider Posts: 3,602
    Why not buy a battery that includes free installation and save yourself the hassle? Most garages do charge to install but one big box chain doesn't and happens to offer a top rated battery to boot. Local Chrysler dealers are going all out to match prices on after market products like tires, brakes, shocks etc. You never know until you ask. They will quote you a price around a hundred bucks but they will listen to a reasonable offer. If you belong to AAA they have a service that offers installation and a battery at your home or business for about $100 but they offer free replacement for 3 years. Lots of options. Choose wisely.
  • tayl0rdtayl0rd Posts: 1,926
    And now for some useful information... :)

    The airbox is attached with rubber gussets. There are no screws. All you have to do is give it a good tug and it comes right off. The "louvered plastic wheel house panel" is just the fender liner. You'll have to remove some screws to take it off, and you might have to remove the tire, too.
  • hainhain Posts: 1
    My 99 chrysler 300M couldn't start. Look like my fuel pump is not pumping gas. The problem code are P1684, P1490, P1489, P1495. Funny thing is after two days of couldn't start, I was able to start my car a few time and then couldn't start again.

    Usually I hear the fuel pump after I turn the key to ready to start position but not anymore.

    Plaese help,
  • jayriderjayrider Posts: 3,602
    anyone had their rotors turned with rotors still mounted on the car ? Were you happy with the results and how much did it cost?
  • I too have the same problem as (tr3323)with the manual heat automatically turning on after being turned off for 5 seconds. My battery went completely dead for several days so I expect the computer battery was dead as well so I think this might be the cause. Can anyone tell me if he/she has resolved such a problem or has received advice on how to correct it. I tried to get the diagnostic by holding the control buttons down but I couldn't get the temp stting to go to 75 as one person advised.


  • Hey i have a 00 300m and mine will not start. I was told it was the starter relay so i bought a new one but it still does not start. All the lights inside turn on with no dimming but when i try to start it all it does is this clicking sound. Does any one know what the problem could be?
  • rjs4rjs4 Posts: 1
    I'm new to the forum. I have a 2000 300M that just went out of extended warranty. Suddenly the remote lock won't work. I also noticed that the analog clock stopped working. Can anybody help with my problem? Thanks!
  • jayercjayerc Posts: 1
    I too am looking for something to bring the trim (silver, not sure what material? alum, chrome, plastic?) around the windows back to life..they look mottled, faded..Anyone have this problem and did you find something to use that will help? I am new to this forum and have just bought my first 300M. '04-almond pearl/ the look of the auto-mobeel! thanks..jayerc :D
  • I have a 2000 300m with 76,000 miles. Before I bought the car I looked at it's Mpg. It was said to have 16 Mpg (City) 24 Mpg (Highway). I live in the suburbs so I expected to get about 18 Mpg. Atm I am getting 10.2 Mpg. I'm no mechanic so I was wondering what may need to be done/changed to get better Mpg. I know the way you drive also effects Mpg but I don't burn-out or accelerate too fast. Thx in advance.
  • tayl0rdtayl0rd Posts: 1,926
    Wow. That's horrible mileage! That thang got a HEMI?? :surprise:

    Check your fuel filter, air filter, spark plugs, and fuel injectors. How does the engine idle and drive? Any stumbling or stalling? Any knocking or pinging? Seems like you might've picked up one that the previous owner insisted on running low grade gas. (Or you might be running low grade gas.)
  • wilrwilr Posts: 3
    I replaced the speed sensor on my 99 300M the part costs about $12 the service about $50.00, there is an inner and outer just make sure they don't get them backwards or you will be going back
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