Question about 2021 Prius Prime Door Lock Switch

Discussion in 'Prime Main Forum (2017-Current)' started by robAlatte, May 29, 2021.

  1. robAlatte

    robAlatte Junior Member

    Joined:
    May 28, 2021
    34
    14
    1
    Location:
    Palm Springs, CA
    Vehicle:
    2021 Prius Prime
    Model:
    Limited
    Hi!

    I have a new blue Toyota 2021 Prius Prime, noticed something odd this evening. While it was charging, I was making some preference adjustments and noticed with the lights on that the drivers door lock switch didnt illuminate but the passenger side does. Why wouldn't the drivers door switch light. Am I missing something?

    Is this normal for the prime owners? It makes no sense why they would light up the passenger side door lock switch but not the drivers. I realize this is a dumb question/rant but just making sure its normal and if there is any way to light the drivers side door switch, Im all in!
     
  2. Ovation

    Ovation Junior Member

    Joined:
    May 11, 2021
    90
    74
    0
    Location:
    Quebec
    Vehicle:
    2021 Prius Prime
    Model:
    Base
    I checked this tonight after reading your post and it’s the same thing on my Prime (base model 2021). So I guess it’s “normal”? No idea, nor can I imagine, why.
     
  3. NewPrius'21

    NewPrius'21 New Member

    Joined:
    May 26, 2021
    10
    2
    0
    Location:
    CA
    Vehicle:
    2021 Prius Prime
    Model:
    XLE
    I just recently purchased one 2 weeks ago and noticed the same thing! I have an appointment with my dealer on Sunday to look at it. Can anybody that has the driver side button illuminate chime in?
     
  4. dtsexpert

    dtsexpert Member

    Joined:
    Sep 13, 2019
    109
    59
    0
    Location:
    San Francisco
    Vehicle:
    2021 Prius Prime
    Model:
    XLE
    Lock button on both sides illuminate on my 2021 XLE fine.
     
  5. Elektroingenieur

    Elektroingenieur Senior Member

    Joined:
    Jan 8, 2017
    2,136
    2,890
    9
    Location:
    California
    Vehicle:
    2016 Prius
    Model:
    Three Touring
    Toyota’s name for the set of door lock and power window switches in the driver’s door is the “multiplex network master switch assembly,” and the Electronic Parts Catalog lists three part numbers, depending on the car’s production date:
    • 84040-47070, through December 2018;
    • 84040-47090, from December 2018 through July 2020; and
    • 84040-48210, from July 2020.
    None of these is listed as a replacement for the others; I don’t know if they are actually interchangeable.

    In New Car Features (more info), the Major Difference topic for model year 2021 says, “The multiplex network master switch has been changed.” Illustrations in the Power Window Control System section, excerpted below, show the old and new versions:

    Multiplex Network Master Switch Assembly Differences 07-2020.png
    *13 MULTIPLEX NETWORK MASTER SWITCH ASSEMBLY
    *a Window Lock Switch
    *b Power Window Switch (Driver)
    *c Remote Switch Front (Passenger Side)
    *d Remote Switch Rear LH
    *e Remote Switch Rear RH
     
    robAlatte likes this.
  6. ChapmanF

    ChapmanF Senior Member

    Joined:
    Mar 30, 2008
    14,619
    10,275
    0
    Location:
    Indiana, USA
    Vehicle:
    2010 Prius
    Model:
    IV
    Somebody pick me up off the floor! Did they give any examples of a minor difference?
     
  7. Elektroingenieur

    Elektroingenieur Senior Member

    Joined:
    Jan 8, 2017
    2,136
    2,890
    9
    Location:
    California
    Vehicle:
    2016 Prius
    Model:
    Three Touring
    No; I assume finding those is left as an exercise for the reader.

    Given the Electronic Parts Catalog in machine-readable form, I suppose it wouldn’t be too difficult to find all the cases in which a service part number differs by model year, but even that wouldn’t capture changes that didn’t affect parts interchange.
     
  8. NewPrius'21

    NewPrius'21 New Member

    Joined:
    May 26, 2021
    10
    2
    0
    Location:
    CA
    Vehicle:
    2021 Prius Prime
    Model:
    XLE
    Just got back from the dealership that said they compared my 2021 PP with other new ones on the lot and they saw the driver door switch not illuminating either. This is so strange that they decided to have the driver door switch not light up!
     
  9. Tideland Prius

    Tideland Prius Moderator of the North
    Staff Member

    Joined:
    Oct 2, 2004
    42,759
    14,248
    41
    Location:
    Canada
    Vehicle:
    2018 Prius Prime
    Model:
    Technology
    This is mildly annoying lol. Like when Toyota removed the chrome accents on the driver’s side power seat controls for 2018.
     
  10. paul518

    paul518 New Member

    Joined:
    Jun 19, 2021
    2
    1
    0
    Location:
    albany ny
    Vehicle:
    2021 Prius Prime
    Model:
    LE
    Boooooo Toyota! I couldn't make this up. My disabled kid outside in the dark in a parking lot trying to get into my car and I can't find the stupid unlock button on my new 2021 prius prime because it doesn't light up. Of course I never locked the car to begin with, but it decided it was necessary. Really?
    I wander what else is missing and I haven't noticed yet.
     
  11. DukeofPrime

    DukeofPrime Junior Member

    Joined:
    May 22, 2021
    60
    43
    0
    Location:
    US
    Vehicle:
    2021 Prius Prime
    Model:
    XLE
    Had a similar problem except it was my wife, and it was dark AND raining (slightly). New car so limited "muscle memory" about switches. My solution was to open the door slightly to turn on the interior lights so I could find the switch. Still got some choice words from the wife.
     
  12. Salamander_King

    Salamander_King Senior Member

    Joined:
    Nov 8, 2015
    8,760
    7,027
    0
    Location:
    New England
    Vehicle:
    2021 Prius Prime
    Model:
    Limited
    @PiPLosAngeles successfully replaced the LED-lit switch from the 2020 PP to his new 2021 PP. It is a direct replacement without doing any wiring mod. Of course, if you have to buy a new OEM switch 84040-47090 as mentioned by @Elektroingenieur on comment #5 above, it will set you back over $300 street price. Wow, MSRP $542.35 for this switch. That's crazy.

    upload_2021-7-19_16-0-24.png
     
  13. Salamander_King

    Salamander_King Senior Member

    Joined:
    Nov 8, 2015
    8,760
    7,027
    0
    Location:
    New England
    Vehicle:
    2021 Prius Prime
    Model:
    Limited
    I was just curious so looked up the price for the new 2021 OEM door switch 84040-48210 price. Well, here is the saving Toyota was counting on. The delete of the LED light on the door switch saved Toyota a whopping $303.41. (MSRP $238.94) Who would have guessed how expensive those tiny LED lamps are.o_O

    upload_2021-7-19_16-7-31.png
     
  14. Trollbait

    Trollbait It's a D&D thing

    Joined:
    Feb 7, 2006
    17,070
    8,202
    0
    Location:
    eastern Pennsylvania
    Vehicle:
    Other Non-Hybrid
    There is also the wires, solder, and the additional costs for QA and warranty.
     
Loading...