Any ideas what could be causing a regular radio signal to be sent from somewhere beneath/inside the car dash? - behind central air vents? It happens about every 10 seconds and lasts about 4 seconds. I know because I have a microwave RF detector. I want to kill this but not sure how or what is doing the transmitting... The car has a hands free phone kit (aftermarket?) so wonder if this is doing it. I don't need nav or phone setup so if there were an easy way to pull a fuse on all these functions that would be great and might solve this. Here is the car from bmwvin.com:
VIN WBADS62040GL81691
Type Code DS62
E Series E39 (2)
Series 5
Type TOUR
Model 530I (EUR)
Steering RL
Doors 5
Engine M54
Displacement 3.00
Power 170
Drive HECK
Transmission AUT
Colour BLACK SAPPHIRE METALLIC (475)
Upholstery STANDARDLEDER/SCHWARZ (N6SW)
Prod. Date 2002-10-10
Available upgardes
Spare/replacement key fob Check compatibility
Vehicle options
L807A NATIONAL VERSION JAPAN
S202A Steptronic
S204A Drive layout, export
S220A Self-levelling suspension
S249A Multifunction f steering wheel
S261A Side airbags for rear passengers
S354A Green windscreen, green shade band
S361A BMW LA wheel, parallel spoke 82
S386A Roof railing
S403A Glass roof, electrical
S423A Floor mats, velours
S428A Warning triangle and first aid kit
S430A Interior/outside mirror with auto dip
S431A Interior mirror with automatic-dip
S441A Smoker package
S459A Seat adjuster, electric, with memory
S470A Isofix-System
S473A Armrest front
S494A Seat heating driver/passenger
S500A Headlight wipe/wash/Intensive cleaning
S520A Fog lights
S521A Rain sensor
S522A Xenon Light
S534A Automatic air conditioning
S548A Kilometer-calibrated speedometer
S555A On-board computer V with remote control
S601A TV function
S609A Navigation system Professional
S646A Preparation f teleph.installation Japan
S676A HiFi speaker system
S694A Provisions for BMW 6 CD changer
S773A Fine wood trim
S818A Battery master switch
S823A Hot-climate version
S845A Acoustic belt warning
S853A Language version English
S876A Radio frequency 315 MHz
S925A Dummy-SALAPA
S992A Control of number-plate attachment
Probably BT module for hands free.
Thanks. I took out fuse 58 in the back of the car above the battery (touring model) and this stopped the microwave transmission. It also of course turned off the radio and onboard computer so this isn't the fix I'm looking for.
Presumably hands-free is an aftermarket mod as it's not listed as an option for the car? Rather than pulling the dash to pieces to try and find this tiny module wherever the previous owner installed it is anyone aware of a fuse to pull or a wire to cut power to the whole phone system while keeping the radio and onboard computer and sat nav alive?
I think you’re going to have to start pulling the head unit as it seems the BT module is on the same fuse as the head unit. PM denniscooper. He’s an E39 guru.
Hi
Marco - I'm not so knowledgeable when it comes to installation of various modules for the potential many electronic gadgets which could be in a car! This also I suspect isn't an E39 specific issue as well!
E36elf - You'll need to begin fault finding by pulling fuses to see if the microwave emission stops and then begin to trace wires to whatever the source could be. Just a stab in the dark and someone perhaps installed a car alarm microwave sensor incorrectly ? Else it might be a faulty unit of 'something' that is failing and causing the output or perhaps maybe even a tracking system of some sort.
Cheers, Dennis!
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