A Plug-and-Play, DIY-Installable 993 Immobilizer Defeat
#406
Rennlist Member
Hi, May I be added to the list? I would appreciate it. Thank you.
Wow, I didn't pay any attention to this thread for a while and suddenly the device morphed into something completely invisible and mounted behind the clock. BRAVO.
Thanks.
Wow, I didn't pay any attention to this thread for a while and suddenly the device morphed into something completely invisible and mounted behind the clock. BRAVO.
Thanks.
#407
Pro
Thread Starter
#408
Drifting
Paul- the IMMO BLOCK takes the place of the gong relay which is behind the fuel gauge. It's just a friction fit but after all these years it takes a little coaxing. I used a stiff putty knife with masking tape wrapped around the end which was risky. If you're stuck on Gilligan's Island and that's all you have give it a try, but there are tools that make it easier (post 276). If it's really, really stuck Orangebox's post (#371) describes a way to get to it from the frunk.
Nothing has to be done to the fuel gauge, just pry and pull it out, leave the wires connected, reach thru the hole and switch out the gong relay with Jay's magic box. If you want to make it easier to remove the gauges again I recommend that you clean off most of the brown sticky glue from the rubber around the gauge housing so that it will be easier to slide out, I used the silicone grease to allow easier install and removal, also you can push the other gauges from behind if you want to clean those too. That is all optional.
Already have a set of the pry-tools, and silicone grease is ordered.
BTW, shipping was very fast.
#409
Rennlist Member
The first time i took the gauges loose I used a medium sized flat blade screwdriver with packing tape folded over the end. Started on left side, then moved to the right side using the other gauge's rim as a leverage point. It took a while, but being careful it came out. The outer rubber turned brownish after removing, but with a little cleaner it looks like new. That was to install the Bergville electronic turn signal flasher, last year.
#410
I have not installed my Immobilizer yet, but I was wondering, has anyone ran the Durametric scan tool after the install to see if the scanner has any issues. I know if you don't disable the immobilizer the software won't recognize the car. I am sure it's not an issue, but still curious.
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dmdinh (03-25-2020)
#412
Pro
Thread Starter
I have not installed my Immobilizer yet, but I was wondering, has anyone ran the Durametric scan tool after the install to see if the scanner has any issues. I know if you don't disable the immobilizer the software won't recognize the car. I am sure it's not an issue, but still curious.
Remember: communications between the ODB port and ECU pass through a switch in the immobilizer. When the immobilizer is "primed" (locked with the FOB), the switch opens, blocking communications. When the immobilizer is "unprimed" (unlocked with the FOB) the switch closes. IMMO BLOCK keeps the immobilizer unprimed, so as long as that physical switch inside the immo is ok, your scan tool will work the way it always did. This is true BTW no matter what scanner you use - from the cheapest generic to the most capable.
Last edited by Jay777; 03-25-2020 at 02:49 PM.
#413
Short answer: if your scan tool worked before the install, it'll work after the install.
Remember: communications between the ODB port and ECU pass through a switch in the immobilizer. When the immobilizer is "primed" (locked with the FOB), the switch opens, blocking communications. When the immobilizer is "unprimed" (unlocked with the FOB) the switch closes. IMMO BLOCK keeps the immobilizer unprimed, so as long as that physical switch inside the immo is ok, your scan tool will the way it always did. This is true BTW no matter what scanner you use - from the cheapest generic to the most capable.
Remember: communications between the ODB port and ECU pass through a switch in the immobilizer. When the immobilizer is "primed" (locked with the FOB), the switch opens, blocking communications. When the immobilizer is "unprimed" (unlocked with the FOB) the switch closes. IMMO BLOCK keeps the immobilizer unprimed, so as long as that physical switch inside the immo is ok, your scan tool will the way it always did. This is true BTW no matter what scanner you use - from the cheapest generic to the most capable.
#414
Has anyone checked the standby current drain (once the 993 enters sleep mode - 3-5 minutes after key-off) with and without the mod?
Typically the 993 sleep current is about 60 ma (.060 amps).
Typically the 993 sleep current is about 60 ma (.060 amps).
#419
Pro
Thread Starter
#420
Got mine installed
Installed mine today. 15 minutes total time. Works as advertised.
Will have to get used to no alarm chimes, but I suspect this will not affect the way I enjoy the car more than the IMMO block has improved the experience of ownership. And, it is reversible.
A few pics...
Couple more...
Thank you Jay and all involved in the development of this mod. Should now be included in the Top Ten list of 993 must-do.
Cheers!
Will have to get used to no alarm chimes, but I suspect this will not affect the way I enjoy the car more than the IMMO block has improved the experience of ownership. And, it is reversible.
A few pics...
Couple more...
Thank you Jay and all involved in the development of this mod. Should now be included in the Top Ten list of 993 must-do.
Cheers!