Go Back   986 Forum - The Community for Porsche Boxster & Cayman Owners > Porsche Boxster & Cayman Forums > Boxster General Discussions

Post Reply
 
LinkBack Thread Tools Display Modes
Old 08-27-2017, 10:08 PM   #1
Custom User Title Here
 
particlewave's Avatar
 
Join Date: Mar 2012
Location: Ft. Leonard Wood
Posts: 6,167
Garage
Quote:
Originally Posted by 78F350 View Post
Sent a pm regarding code name Qmulus.
The data that is specific to your car is on a single ic. From what I understand it is not reprogrammable in the immobilizer (not eeprom). Rather, the DME can be programmed to it. What Q does is de-solder and transfer that little piece of magic from one immobilizer unit to another.
Sure that the great-and-powerful Nine8Six can do it selfie. Just opening a box I only see 2 ic's of interest and I already know it isn't the bigger of the two.
Not the case...the EEPROM is read/write. This is personal experience, not speculation. Certain people that repair these immobilizers at a rate of hundred$ for 10 minutes of work don't want the average Joe to know how simple it is.

As I stated, I just walked someone through the process via text message. It is very simple. His car is now running great and all immobilizer functions are back to normal.
{part# removed}...exact # varies by model.

Last edited by particlewave; 09-07-2017 at 10:31 AM.
particlewave is offline   Reply With Quote
Old 08-27-2017, 10:19 PM   #2
Registered User
 
Nine8Six's Avatar
 
Join Date: Sep 2013
Location: Montreal, QC. (currently expat to Shanghai)
Posts: 3,249
'97 for your reference/record below Charles. And can you please source/fabricate us a sealed enclosure that the Immob fits into? (please). You'll save so many great Boxsters and 911... these things are nearly shot man, or soon will be if not taken care right away. Take my word... not exactly cheap :/





^ Look at that corrosion build up... 20 years (or possibly 22 years, not sure loll)
__________________
______________________________
'97 Boxster base model 2.5L, Guards Red/Tan leather, with a new but old Alpine am/fm radio.

Last edited by Nine8Six; 08-27-2017 at 10:24 PM.
Nine8Six is offline   Reply With Quote
Old 08-27-2017, 10:23 PM   #3
Registered User
 
Join Date: Jun 2017
Location: Visalia, Ca
Posts: 136
The Nine8Six (the car) is dead, can't start

Lot's of interesting suggestions, all missed the most basic thing. You said you haven't driven the car in 2 months. If the alarm was on, your battery is too low to start the vehicle. Happened with my 2001 just this week and after only 3 weeks of not being driven. Jump start it, drive around for 30 or 40 minutes and you're likely good to go. If the battery was disconnected, that does not mean the battery is good. 12.3 or so volts sounds right but, that's not under a load. Test the battery before going for expensive and likely unnecessary repairs.

Last edited by RobertKing; 08-27-2017 at 10:28 PM.
RobertKing is offline   Reply With Quote
Old 08-27-2017, 10:25 PM   #4
Custom User Title Here
 
particlewave's Avatar
 
Join Date: Mar 2012
Location: Ft. Leonard Wood
Posts: 6,167
Garage
Quote:
Originally Posted by RobertKing View Post
Lot's of interesting suggestions, all missed the most basic thing. You said you haven't driven the car in 2 months. If the alarm was on, your battery is too low to start the vehicle. Happened with my 2001 just this week and after only 3 weeks of not being driven. Jump start it, drive around for 30 or 40 minutes and you're likely good to go.
You missed it, Robert. Read post #1.
particlewave is offline   Reply With Quote
Old 08-28-2017, 10:23 PM   #5
Registered User
 
Join Date: Jun 2017
Location: Visalia, Ca
Posts: 136
I read the first post, the immobilizer is under the drivers seat so, dismissed the water under the passenger seat as an issue. Basic trouble shooting is to go from simple to complex, not the other way round, hence my suggestion. A battery can be new and have sat on a shelf for many months before sale. ALWAYS, test the battery first. Next, test for current draw. Then, test ECU/Immobilizer for issues. If you go the opposite direction, you needlessly spend time and money when it may be as simple and cheap, as a battery cable. My own Boxster S (2001 3.2L) had a very low battery after 3 weeks of not being driven. Same symptoms. Hooked up a charger for a few hours, turned the key and she started right up.
RobertKing is offline   Reply With Quote
Old 08-28-2017, 10:32 PM   #6
Custom User Title Here
 
particlewave's Avatar
 
Join Date: Mar 2012
Location: Ft. Leonard Wood
Posts: 6,167
Garage
Quote:
Originally Posted by RobertKing View Post
I read the first post, the immobilizer is under the drivers seat so, dismissed the water under the passenger seat as an issue. Basic trouble shooting is to go from simple to complex, not the other way round, hence my suggestion. A battery can be new and have sat on a shelf for many months before sale. ALWAYS, test the battery first. Next, test for current draw. Then, test ECU/Immobilizer for issues. If you go the opposite direction, you needlessly spend time and money when it may be as simple and cheap, as a battery cable. My own Boxster S (2001 3.2L) had a very low battery after 3 weeks of not being driven. Same symptoms. Hooked up a charger for a few hours, turned the key and she started right up.
Quote:
Originally Posted by RobertKing View Post
2,050 horsepower? On what planet? Brand new battery is meaningless. Brand new, can fail just as often and as quick as 3 years old or more. You've no idea how long that battery sat on a storeroom shelf before it was sold to you. I do diagnostics on computers every single day, it's my living. Batteries and such issues are no difference. Simple to complex is the proper order. Eliminate the simple before moving onto something complex. While it could be, the immobilizer, it's far more likely something much higher on the chain is the actual culprit. As I said in a previous post, my own, 2001 Boxster S did the same thing after 3 weeks of not being driven. A few hours charge and she was back up and running.
Yikes.

Yeah...I'm fairly sure it's the immobilizer.
You really ought to read every post on a thread before commenting. His battery is fine.

Last edited by particlewave; 08-28-2017 at 10:35 PM.
particlewave is offline   Reply With Quote
Old 08-29-2017, 12:23 AM   #7
Registered User
 
Nine8Six's Avatar
 
Join Date: Sep 2013
Location: Montreal, QC. (currently expat to Shanghai)
Posts: 3,249
Robert, my battery is the Best-in-the-World! Well, you know what I mean by that. Made in Tacalloo (new country), and marked up 1000%. Fits well though



What you said totally make sense and I should have charged up the battery before to rule this out. I actually did today just to give it a better life than it had. And you are so right man, often the silliest things we forget are often the cause of bigger problem(s). Always best to keep a down to earth approach when doing car diagnostic. Although pretty hard to achieve when you know zero about Porsche cars (my first Porsche man).

All I know is when electronics starts flashing and resisting in porsche cars, it either the audi $10 switch or the windshield washer fluid gone bad lollll As hard as I tried to believe it wasn’t the immobilizer, trust me I did tried :/

Keep up the great advice man
__________________
______________________________
'97 Boxster base model 2.5L, Guards Red/Tan leather, with a new but old Alpine am/fm radio.
Nine8Six is offline   Reply With Quote
Old 08-28-2017, 04:18 AM   #8
Registered User
 
Nine8Six's Avatar
 
Join Date: Sep 2013
Location: Montreal, QC. (currently expat to Shanghai)
Posts: 3,249
Quote:
Originally Posted by RobertKing View Post
Jump start it, drive around for 30 or 40 minutes and you're likely good to go. If the battery was disconnected, that does not mean the battery is good. 12.3 or so volts sounds right but, that's not under a load. Test the battery before going for expensive and likely unnecessary repairs.
You have no idea how hard it is to jump start a 2,050 horsepower Boxster, Rob Batt is brand new from 2016, from Porsche (in special, of course). But will take your advice and drive it as soon as it starts.

Thanks for helping me out bud
__________________
______________________________
'97 Boxster base model 2.5L, Guards Red/Tan leather, with a new but old Alpine am/fm radio.
Nine8Six is offline   Reply With Quote
Old 08-28-2017, 10:29 PM   #9
Registered User
 
Join Date: Jun 2017
Location: Visalia, Ca
Posts: 136
2,050 horsepower? On what planet? Brand new battery is meaningless. Brand new, can fail just as often and as quick as 3 years old or more. You've no idea how long that battery sat on a storeroom shelf before it was sold to you. I do diagnostics on computers every single day, it's my living. Batteries and such issues are no difference. Simple to complex is the proper order. Eliminate the simple before moving onto something complex. While it could be, the immobilizer, it's far more likely something much higher on the chain is the actual culprit. As I said in a previous post, my own, 2001 Boxster S did the same thing after 3 weeks of not being driven. A few hours charge and she was back up and running.
RobertKing is offline   Reply With Quote
Old 08-28-2017, 08:40 AM   #10
Registered User
 
Join Date: Jun 2016
Location: Detroit
Posts: 211
Quote:
Originally Posted by Nine8Six View Post
'97 for your reference/record below Charles. And can you please source/fabricate us a sealed enclosure that the Immob fits into? (please). You'll save so many great Boxsters and 911... these things are nearly shot man, or soon will be if not taken care right away. Take my word... not exactly cheap
Like this?

Porsche Boxster & 996 Immobilizer Waterproof Case Enclosure
Disaster is offline   Reply With Quote
Old 08-28-2017, 08:49 AM   #11
Porsche "Purist"
 
Paul's Avatar
 
Join Date: Aug 2003
Location: Wisconsin
Posts: 2,123
Garage
Interesting. A reset EEPROM?

https://www.youtube.com/watch?v=qCnpQvEWL_U
__________________
1998 Boxster with 7.8 DME, 2005 3.6 liter/325 hp, Variocam Plus, 996 Instrument panel
2001 Boxster original owner. I installed used motor at 89k.
1987 924S. 2002 996TT. PST-2
Owned and repaired Porsches since 1974. Porsche: It's not driving, it's therapy.
Paul is offline   Reply With Quote
Post Reply



Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is On
Trackbacks are On
Pingbacks are On
Refbacks are On




All times are GMT -8. The time now is 11:55 AM.


Powered by vBulletin® Version 3.8.7
Copyright ©2000 - 2025, vBulletin Solutions, Inc.
Content Relevant URLs by vBSEO 3.6.0
Copyright 2025 Pelican Parts, LLC - Posts may be archived for display on the Pelican Parts Website -    DMCA Registered Agent Contact Page