Page 38 of 39 FirstFirst ... 2836373839 LastLast
Results 556 to 570 of 584

Thread: Dangerous cylinder deactivation trouble on 2018 CX-5 and 6 models

  1. #556
    Registered Member


    Join Date
    Jul 2019
    Posts
    9
    I`ve already tried to contact Mazda from different countries in Europe.
    They said "please ask your local distributor" and finally now there is no way to upgrade ECU in this car in Poland.


    It is very strange considering that the fault may cause a sudden loss of power. You do not have to be outstanding to understand what the consequences may be.

  2. #557
    Registered Member


    Join Date
    Jun 2019
    Posts
    6
    Quote Originally Posted by Luke_M6 View Post
    I`ve already tried to contact Mazda from different countries in Europe.
    They said "please ask your local distributor" and finally now there is no way to upgrade ECU in this car in Poland.


    It is very strange considering that the fault may cause a sudden loss of power. You do not have to be outstanding to understand what the consequences may be.
    The alert is finally on RAPEX therefore distributors in every EU country have to execute the recall:

    Alert number:*A12/1226/19
    Product:*Passenger car
    Name:*3, 6, CX-5
    Risk type:*Injuries
    Category:*Motor vehicles
    Brand:*Mazda
    Type / number of model:*Mazda 3 (BP), Mazda 6 (GL), CX-5 (KF)
    Type of alert:* Products with serious risks
    Due to a software error, the powertrain control module (PCM) may operate improperly when transitioning from cylinder deactivation to full cylinder activation modes. As a result, an intake valve rocker arm may come out of position and make contact with internal engine parts.
    This may cause the engine to stall in motion without the ability to be restarted, increasing the risk of an accident.
    *
    Measures taken by economic operators: Recall of the product from end users*(By: Distributor)
    Description:*Passenger car under Mazda recall code: AK038A.
    Batch number / Barcode:*The affected vehicles were manufactured between 7 November 2018 and 13 May 2019 (Mazda 3), between 26 March 2018 and 22 April 2019 (Mazda 6), between 20 June 2017 and 20 April 2019 (Mazda CX-5).
    Country of origin:*Japan
    Alert submitted by:*Romania

  3. #558
    Registered Member


    Join Date
    Jul 2019
    Posts
    9
    Thank You Romania

    I didn't know about rapex system.
    Positive information.

  4. #559
    Registered Member


    Join Date
    Aug 2019
    Posts
    3
    Hey guys!
    I had my CX-5 taken to the service shop this morning. They took about an hour to work on the PCM update. They told me that the reprogram is complete and firmware has been updated. I do not see my trips reset or favorites lost on the infotainment, like most of them reported here of disconnecting battery before the update. Anybody else who had the same experience?
    Did they actually do it? Any way to confirm this?
    I don't see the firmware version on the invoice either... dang!

    Thanks in advance.
    2018 CX-5 Touring

  5. #560
    Structural Member shadonoz's Avatar
    Donated: $5

    2017 CX-5 GT AWD Tech

    Join Date
    Oct 2017
    Location
    State of Jefferson - southern Oregon
    Posts
    2,238
    Quote Originally Posted by gm43514 View Post
    Hey guys!
    I had my CX-5 taken to the service shop this morning. They took about an hour to work on the PCM update. They told me that the reprogram is complete and firmware has been updated. I do not see my trips reset or favorites lost on the infotainment, like most of them reported here of disconnecting battery before the update. Anybody else who had the same experience?
    Did they actually do it? Any way to confirm this?
    I don't see the firmware version on the invoice either... dang!

    Thanks in advance.
    2018 CX-5 Touring
    Mazda really should list the version on the invoice. Otherwise, people will be wondering forever if anything was actually done.

    They've got to step up and do everything in their power to give people confidence in the fix.

  6. #561
    Registered Member yrwei52's Avatar
    Donated: $8

    2016 Mazda CX-5 GT AWD w/Tech

    Join Date
    Mar 2015
    Location
    Plano, Texas, USA
    Posts
    7,955

    Arrow Dangerous cylinder deactivation trouble on 2018 CX-5 and 6 models

    Quote Originally Posted by shadonoz View Post
    Quote Originally Posted by gm43514 View Post
    Hey guys!
    I had my CX-5 taken to the service shop this morning. They took about an hour to work on the PCM update. They told me that the reprogram is complete and firmware has been updated. I do not see my trips reset or favorites lost on the infotainment, like most of them reported here of disconnecting battery before the update. Anybody else who had the same experience?
    Did they actually do it? Any way to confirm this?
    I don't see the firmware version on the invoice either... dang!

    Thanks in advance.
    2018 CX-5 Touring
    Mazda really should list the version on the invoice. Otherwise, people will be wondering forever if anything was actually done.

    They've got to step up and do everything in their power to give people confidence in the fix.
    Yes Mazda dealer should provide PCM version number on the invoice like jjm86m's Mazda dealer did after the dealer fixed his rocker arm fallen problem. I was given PCM version on the invoice when I got PCM update for Flexible oil life monitor problem.

    If a Mazda dealer can't provide PCM version number, that does make people wonder if they know which version of PCM software they need to use for this cylinder deactivation recall.

    Quote Originally Posted by jjm86m View Post
    My original PCM software was F0008XDX. It was reflashed F0010XDX
    Quote Originally Posted by jjm86m View Post
    Quote Originally Posted by yrwei52 View Post
    BTW, how did you get the firmware version out of your PCM?
    It was on my service report for the work completed on my CX5. I didn't go in and check it myself.

  7. #562
    Registered Member


    Join Date
    Jul 2019
    Posts
    9
    I wonder if you can see any change after connecting to Forscan after the firmaware action at Mazda dealer.

    I seeing PCM Power Train Control Module strategy code, is not like F0010XDX but PYL3-188K2-E, maybe
    this may change after the upgrade and it will be a way to confirm the service action carried out.

  8. #563
    Registered Member yrwei52's Avatar
    Donated: $8

    2016 Mazda CX-5 GT AWD w/Tech

    Join Date
    Mar 2015
    Location
    Plano, Texas, USA
    Posts
    7,955

    Arrow Dangerous cylinder deactivation trouble on 2018 CX-5 and 6 models

    Quote Originally Posted by Luke_M6 View Post
    I wonder if you can see any change after connecting to Forscan after the firmaware action at Mazda dealer.

    I seeing PCM Power Train Control Module strategy code, is not like F0010XDX but PYL3-188K2-E, maybe
    this may change after the upgrade and it will be a way to confirm the service action carried out.
    Yeah the PCM version "F0010XDX" printed on jjm86m's invoice does sound strange. By reading my original TSB 01-019/15 dated on 8/6/2015, and the latest TSB 01-008/19 dated on 2/08/2019 for "Engine Oil Flexible Maintenance Notification Does Not Work", there're PCM calibration part number and file name for PCM firmware update. My updated PCM calibration p/n is "PYAV-188K2-C" on Denso for 2016 CX-5 4WD at the time. Now there's a newer version, "PYAV-188K2-E", for the same problem. I believe "F0010XDX" could be just the "file name".

  9. #564
    Registered Member


    Join Date
    Jul 2019
    Posts
    9
    It looks like you are very close to the truth. I just found this: https://static.nhtsa.gov/odi/rcl/201...9V497-3997.pdf

    ...and I think that F0010XDX is the manufacturer's internal operation number, while PYAV-188K2-C is an example PCM file name. Interestingly, this file name can be read using Forscan, no need to connect the original Mazda MDS diagnoscope.

    Here You can find more pdf documents about that recall:

    https://www.nhtsa.gov/vehicle/2018/M...DR/FWD#recalls

    Some interesting words:

    "The rocker arm comes out of position only when a switch between cylinder deactivation/activation
    occurs, and the software program to increase oil pressure to hydraulic valve adjusters is incorrect.
    If the rocker arm starts to come out of position during this switch, there is a threshold for full separation
    and partial separation.
    * In partial separation condition, the rocker arm maintains close alignment to intended operating
    position, and will return to normal position quickly with no effect on engine performance.
    * In full separation condition, the rocker arm alignment passes the partial separation threshold
    and will move fully out of position, causing damage to the engine.

    Since the remedy software corrects the oil pressure control program of the hydraulic valve clearance
    adjuster, if a customer did not already experience engine damage or engine failure due to the defect,
    they will not have related issues after they have the remedy completed."

  10. #565
    Registered Member


    Join Date
    Aug 2019
    Posts
    3
    Quote Originally Posted by Luke_M6 View Post
    It looks like you are very close to the truth. I just found this: https://static.nhtsa.gov/odi/rcl/201...9V497-3997.pdf

    ...and I think that F0010XDX is the manufacturer's internal operation number, while PYAV-188K2-C is an example PCM file name. Interestingly, this file name can be read using Forscan, no need to connect the original Mazda MDS diagnoscope.

    Here You can find more pdf documents about that recall:

    https://www.nhtsa.gov/vehicle/2018/M...DR/FWD#recalls

    Some interesting words:

    "The rocker arm comes out of position only when a switch between cylinder deactivation/activation
    occurs, and the software program to increase oil pressure to hydraulic valve adjusters is incorrect.
    If the rocker arm starts to come out of position during this switch, there is a threshold for full separation
    and partial separation.
    * In partial separation condition, the rocker arm maintains close alignment to intended operating
    position, and will return to normal position quickly with no effect on engine performance.
    * In full separation condition, the rocker arm alignment passes the partial separation threshold
    and will move fully out of position, causing damage to the engine.

    Since the remedy software corrects the oil pressure control program of the hydraulic valve clearance
    adjuster, if a customer did not already experience engine damage or engine failure due to the defect,
    they will not have related issues after they have the remedy completed."
    Quote Originally Posted by yrwei52 View Post
    Yeah the PCM version "F0010XDX" printed on jjm86m's invoice does sound strange. By reading my original TSB 01-019/15 dated on 8/6/2015, and the latest TSB 01-008/19 dated on 2/08/2019 for "Engine Oil Flexible Maintenance Notification Does Not Work", there're PCM calibration part number and file name for PCM firmware update. My updated PCM calibration p/n is "PYAV-188K2-C" on Denso for 2016 CX-5 4WD at the time. Now there's a newer version, "PYAV-188K2-E", for the same problem. I believe "F0010XDX" could be just the "file name".
    Quote Originally Posted by Luke_M6 View Post
    I wonder if you can see any change after connecting to Forscan after the firmaware action at Mazda dealer.

    I seeing PCM Power Train Control Module strategy code, is not like F0010XDX but PYL3-188K2-E, maybe
    this may change after the upgrade and it will be a way to confirm the service action carried out.
    Quote Originally Posted by yrwei52 View Post
    Yes Mazda dealer should provide PCM version number on the invoice like jjm86m's Mazda dealer did after the dealer fixed his rocker arm fallen problem. I was given PCM version on the invoice when I got PCM update for Flexible oil life monitor problem.

    If a Mazda dealer can't provide PCM version number, that does make people wonder if they know which version of PCM software they need to use for this cylinder deactivation recall.
    Appreciate all your inputs, thanks guys.
    I'm gonna try connecting to a Forscan (gotta buy one from amazon, if you have any suggestions, please chip in) this weekend and get back on this.

    Is it even possible to update/reprogram the PCM without disconnecting the battery? A lil bit of Google suggests removing the negative battery cable as step 1.

  11. #566
    Registered Member

    2019 CX-5 Reserve Eternal Blue

    Join Date
    Aug 2018
    Location
    Central Virginia, USA...the winding rural part
    Posts
    817
    Quote Originally Posted by gm43514 View Post
    Appreciate all your inputs, thanks guys.
    I'm gonna try connecting to a Forscan (gotta buy one from amazon, if you have any suggestions, please chip in) this weekend and get back on this.

    Is it even possible to update/reprogram the PCM without disconnecting the battery? A lil bit of Google suggests removing the negative battery cable as step 1.
    Check out this post in another thread on this topic regarding disconnecting the battery/pulling fuses.

  12. #567
    Registered Member


    Join Date
    Aug 2019
    Posts
    3
    Quote Originally Posted by Avoidin Deer View Post
    Check out this post in another thread on this topic regarding disconnecting the battery/pulling fuses.
    That definitely is an eyeopener. Thanks for pointing it out here.
    Guess that puts it to rest. No more confusion!

    Thank you!

  13. #568
    Registered Member


    Join Date
    Jul 2019
    Posts
    9
    I tortured the Polish Mazda branch and finally received an email that I could arrange to upload new software.
    I wonder if they are going to announce a service action or if they want to upload the update quietly during warranty inspections.

  14. #569
    Registered Member

    2018 CX-5 GT

    Join Date
    May 2018
    Location
    Washington
    Posts
    8
    I found Mazda's patent (US20150377151A1) that describes the cylinder deactivation mechanism. Like any patent, it's not light reading, and there's an extra layer of difficulty because it's been translated from the original Japanese. However, if you're willing to slog through it, you'll get a very good understanding of how CD is implemented. Interestingly, the patent isn't limited to cylinder deactivation. Discussion of the variable valve timing system is interwoven through the document. The unifying theme is that both systems are controlled by a variable capacity oil pump.

    I won't try to summarize it beyond noting that it confirms the default condition is for all four cylinders to be operative. The pin that locks the HLA in its extended position is engaged by a spring. To deactivate the cylinder, the pin is driven inward (disengaged) with oil pressure, allowing the HLA to be compressed (shortened) by the cam, thereby stopping the open/shut movement of the intake and exhaust valves.

    After studying the patent's drawings and descriptions, I'm more convinced than ever that the reason the rocker falls off is that the HLA is somehow inhibited from springing back to its extended length, which creates a gap between the top of the HLA and the rocker. Unfortunately, there isn't enough detail in the patent to figure out what is responsible for inhibiting the HLA from extending. I hope the cause is entirely a function of the oil pressures that are being tweaked by Mazda's reprogramming of the PCM in the recall.
    Last edited by Mulligan; 08-18-2019 at 12:38 PM.

  15. #570
    Registered Member

    2018 CX5

    Join Date
    Jul 2018
    Location
    United States
    Posts
    137
    Lets hope! It is still amazing to me (a car novice) that changes in oil pressure is what moves that pin. I always thought oil in the engine was just for lubrication and nothing else!

Page 38 of 39 FirstFirst ... 2836373839 LastLast

Similar Threads

  1. A simple question for 2018 Mazda6 with cylinder deactivation owners
    By obrt in forum Mazda6 Engine & Transmission
    Replies: 1
    Last Post: 06-29-2019, 11:20 AM
  2. Maintenance on these newer 2018/2019 models
    By doesntmatterz in forum CX-9 General
    Replies: 4
    Last Post: 12-09-2018, 12:25 AM
  3. Cylinder deactivation
    By sjbraun55 in forum CX-5 General
    Replies: 340
    Last Post: 03-10-2018, 10:57 PM
  4. KF CX-5 with Cylinder Deactivation coming to EU
    By Jedi54 in forum CX-5 General
    Replies: 60
    Last Post: 11-18-2017, 12:56 AM
  5. 2018 MPG - FWD and AWD Models
    By Triton46 in forum CX-5 General
    Replies: 15
    Last Post: 05-03-2017, 02:22 AM

Bookmarks

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •