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Thread: P0524 Check Engine Light on 3 Month Old 2018 CX-5 AWD Touring

  1. #16
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    I got the same pcm flash after they couldn't find anything wrong. Cel has not come back.

  2. #17
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    Could be an oil filter thing, too. Throw out that Mexican filter and get one from Thailand, lol.

  3. #18
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    Quote Originally Posted by yrwei52 View Post
    Thanks for the update.

    IMO you're a victim of eased tolerance of manufacturing and your engine simply got some out of spec parts assemblied into it. The PCM updates could simply just relax the range of low oil pressure warning which won't trigger the P0524 error code like it's supposed to be. The proper fix should be like ferro_sk's Mazda dealer, but that would cost too much!


    Did you buy that RAV4 yet?

  4. #19
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    Quote Originally Posted by Puyapim View Post
    Did you buy that RAV4 yet?
    Not yet. I usually would wait for a year or two for any new power train or new model hopefully the manufacture would fix most of problems after the new release. I did a test drive a couple of days ago on a 2019 Toyota RAV4 XLE FWD and didnít see those crappy assembly interior trims showed in the Lexus forum. Made in Japan definitely helped. My major complaint is the engine is noisy. It seems something is loose with the rattling noise even during the idle when I popped open the hood. Worse thereís no sound deadening hood liner which was there on 2018 RAV4ís! The salesman said the rattling noise is from dual injectors (direct and port) for each cylinder.

    Yeah definitely our CX-5 looks much nicer and drives quieter.

  5. #20
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    Quote Originally Posted by yrwei52 View Post
    Not yet. I usually would wait for a year or two for any new power train or new model hopefully the manufacture would fix most of problems after the new release. I did a test drive a couple of days ago on a 2019 Toyota RAV4 XLE FWD and didn*t see those crappy assembly interior trims showed in the Lexus forum. Made in Japan definitely helped. My major complaint is the engine is noisy. It seems something is loose with the rattling noise even during the idle when I popped open the hood. Worse there*s no sound deadening hood liner which was there on 2018 RAV4*s! The salesman said the rattling noise is from dual injectors (direct and port) for each cylinder.

    Yeah definitely our CX-5 looks much nicer and drives quieter.
    Maybe they'll kaizen some improvements into the 2020 year. Was looking forward to it, too. Sounds like it's turning out to be a dud.

  6. #21
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    Quote Originally Posted by madar View Post
    Maybe they'll kaizen some improvements into the 2020 year. Was looking forward to it, too. Sounds like it's turning out to be a dud.
    Actually the Dynamic Force 2.5L and 8-speed auto on RAV4 have been out for more than a year since 2018 Camry. I wouldn't worry too much on reliability for the drive train. The noisy engine during idle is a surprise but shouldn't affect the reliability. 203 hp feels a little stronger than my 2016 CX-5. And the main thing for me is the fuel economy on this new drive train. Based on EPA FE estimates and real-world data from Fuelly on 2018 Camry, a better fuel economy than my CX-5 is real. Honestly with everything considered, I may have to re-consider a 2019/2020 CX-5 Signature as it'd be cheaper than a full-loaded RAV4 Limited AWD. Between 2 devils (for me) of cylinder deactivation and turbo charger, I may choose turbo. But fuel economy on 2.5T is pitiful.

  7. #22
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    Quote Originally Posted by yrwei52 View Post
    Actually the Dynamic Force 2.5L and 8-speed auto on RAV4 have been out for more than a year since 2018 Camry. I wouldn't worry too much on reliability for the drive train. The noisy engine during idle is a surprise but shouldn't affect the reliability. 203 hp feels a little stronger than my 2016 CX-5. And the main thing for me is the fuel economy on this new drive train. Based on EPA FE estimates and real-world data from Fuelly on 2018 Camry, a better fuel economy than my CX-5 is real. Honestly with everything considered, I may have to re-consider a 2019/2020 CX-5 Signature as it'd be cheaper than a full-loaded RAV4 Limited AWD. Between 2 devils (for me) of cylinder deactivation and turbo charger, I may choose turbo. But fuel economy on 2.5T is pitiful.
    Guess I'll have to decide for myself next model year and check them out. I like the fact that you can choose which AWD mode that you want.

  8. #23
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    Quote Originally Posted by madar View Post
    Guess I'll have to decide for myself next model year and check them out. I like the fact that you can choose which AWD mode that you want.
    Yeah we have to set our own priority straight as thereís no perfect car available for us. My first priorities are reliability and fuel economy. I donít care too much on power as the power of my current 187hp 2.5L 2016 CX-5 is good enough for me. Thereíre many configurations on new RAV4 with different AWD setups. Unfortunately we canít find any AWD in Texas unless the trim level has AWD as the default. Iíve to decide between RAV4 Limited or CX-5 Signature which will only come with AWD.

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    There is a TSB for this and it is strickly for 2018 CX 5 with VINS lower than JM3KF******406225. These have a manufacture date before May 7, 2018.
    The issue is software code that controls the engine oil valve and causes it to work too slowly in certain situations. This results in engine oil pressure rising too slowly and setting a low oil pressure OBD code PO 524.
    Dealer will check oil pressures and as long as it meets spec, the update to the PCM with be performed. TSB was issued 10/18/2018 TSB # 01-020-18

  10. #25
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    here are the normal oil pressures excpected

    RPM Normal oil pressure
    650 50 kpa (7 psi) or more
    1,500 110-175 kpa (16.0 - 25.3 psi)
    4500+ 300-430 kpa (43.6 - 62.3 psi)

    it can be viewed through obd.

  11. #26
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    Thanks for this thread.

    Wife was driving to Milwaukee this morning and out of no where the oil light popped on, so having no idea had her drive it home to be safe. Then found this thread.

    2018 Mazda CX-5 with VIN ending 323***, called my dealer and scheduled an appointment for today. Will loop back.

  12. #27
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    Arrow P0524 Check Engine Light on 3 Month Old 2018 CX-5 AWD Touring

    Quote Originally Posted by flimflamman View Post
    There is a TSB for this and it is strickly for 2018 CX 5 with VINS lower than JM3KF******406225. These have a manufacture date before May 7, 2018.
    The issue is software code that controls the engine oil valve and causes it to work too slowly in certain situations. This results in engine oil pressure rising too slowly and setting a low oil pressure OBD code PO 524.
    Dealer will check oil pressures and as long as it meets spec, the update to the PCM with be performed. TSB was issued 10/18/2018 TSB # 01-020-18
    Ha this TSB somehow makes me believe this's related to cylinder deactivation from 2018 CX-5! We have no such issue before, and started happening from MY 2018. And the falling rocker arm problem is also related the oil pressure been adjusted too low, at least according to Mazda although IMO there's definitely more involved but Mazda is just not willing to tell.

  13. #28
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    Arrow P0524 Check Engine Light on 3 Month Old 2018 CX-5 AWD Touring

    Quote Originally Posted by 08MicaMS3 View Post
    Thanks for this thread.

    Wife was driving to Milwaukee this morning and out of no where the oil light popped on, so having no idea had her drive it home to be safe. Then found this thread.

    2018 Mazda CX-5 with VIN ending 323***, called my dealer and scheduled an appointment for today. Will loop back.
    How many miles on your 2018 CX-5? Have you changed factory oil yet?

    Actually your situation is DIFFERENT from what was described in this thread. Those with problem in this thread had only CEL with P0524 error code, but they didn't have Low Oil Pressure Warning light. Yours has Low Oil Pressure Warning light on without CEL, which is definitely more serious!

    You should use free Mazda road service and tow your CX-5 to your dealer as you never know what is going on when the low oil pressure light is on. And when this light is on, it means your engine has low oil pressure which will damage the engine. The owner's manual says don't drive, tow it to the dealer.

  14. #29
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    Quote Originally Posted by 08MicaMS3 View Post
    Thanks for this thread.

    Wife was driving to Milwaukee this morning and out of no where the oil light popped on, so having no idea had her drive it home to be safe.
    That was not the safe decision. When the oil pressure light goes on STOP THE ENGINE. To keep driving risks a seized engine. You were lucky this time.

  15. #30
    newfound love for my MS3! 08MicaMS3's Avatar

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    Oil pressure light did not stay on nor did it come back after restart. Oil level was fine. 12000 miles and had its first oil change at 7500.

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