Alarm system retrofit info

Red_Tears · 09-22-2019, 02:02 PM

If you have a local salvage yard, the alarm system on 2004+ 7 series is the same as e90, pulled one this morning, and installed the alarm. Spent a whopping $40 for the ultrasonic sensor, siren, and hood sensor. I will still need a bracket (that didn't fit) to mount the siren but everything else was p&p. Thought I'd let you guys know in case you wanted a more cost effective solution for the retrofit.

-R

Edit: I also got the control modules for tpm at $10 each. Pulled from a 530. Will post back results once I test drive the car.

smass · 09-22-2019, 03:44 PM

Good info. If you really want to cheap out, you don't really need the hood switch for the system to work. And the siren can be stuck to the metal above the wheel well with 3M double sided tape.

Red_Tears · 09-22-2019, 10:09 PM

Thanks for the reply! Yeah I thought of doing something like that, but it's not really about the cheaping out part, but I'll definitely keep it in mind, Thanks!

As for the tpm modules, they function, its the sensor on the rim itself that is bad (at least now I know haha) so if anyone needs some tpm modules just shoot me a pm!

09-22-2019, 02:02 PM	#1
Red_Tears New Member 7 Rep 27 Posts Drives: 2008 BMW 335i Join Date: Sep 2019 Location: Central US iTrader: (0)	Alarm system retrofit info If you have a local salvage yard, the alarm system on 2004+ 7 series is the same as e90, pulled one this morning, and installed the alarm. Spent a whopping $40 for the ultrasonic sensor, siren, and hood sensor. I will still need a bracket (that didn't fit) to mount the siren but everything else was p&p. Thought I'd let you guys know in case you wanted a more cost effective solution for the retrofit. -R Edit: I also got the control modules for tpm at $10 each. Pulled from a 530. Will post back results once I test drive the car.
	Appreciate 0 Tweet Quote

09-22-2019, 03:44 PM	#2
smass Lieutenant Colonel 396 Rep 1,578 Posts Drives: 06 325i - 10 335i Join Date: Sep 2010 Location: Scottsdale, AZ iTrader: (1) Garage List 2010 E90 335i [0.00] 2016 F15 35i [0.00] 2003 E53 3.0 [0.00] 2006 E90 325i [0.00]	Good info. If you really want to cheap out, you don't really need the hood switch for the system to work. And the siren can be stuck to the metal above the wheel well with 3M double sided tape.
	Appreciate 0 Quote

09-22-2019, 10:09 PM	#3
Red_Tears New Member 7 Rep 27 Posts Drives: 2008 BMW 335i Join Date: Sep 2019 Location: Central US iTrader: (0)	Thanks for the reply! Yeah I thought of doing something like that, but it's not really about the cheaping out part, but I'll definitely keep it in mind, Thanks! As for the tpm modules, they function, its the sensor on the rim itself that is bad (at least now I know haha) so if anyone needs some tpm modules just shoot me a pm!
	Appreciate 0 Quote