Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
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HOMESERVICE MANUALSBMW1993740IL (E32/2) V8-3982CC 4.0L DOHC (M60)REPAIR AND DIAGNOSISACCESSORIES AND OPTIONAL EQUIPMENTANTITHEFT AND ALARM SYSTEMSDESCRIPTION AND OPERATIONELECTRONIC DRIVE AWAY PROTECTION, VERSION II (EWS II)COMPONENTSTRANSMITTER/RECEIVER MODULE
1993 BMW 740iL (E32/2) V8-3982cc 4.0L DOHC (M60)
Transmitter/Receiver Module
1993 BMW 740iL (E32/2) V8-3982cc 4.0L DOHC (M60)SECTION Transmitter/Receiver Module
TRANSMITTER / RECEIVER MODULE
On E36 and E34 models the module is positioned near the steering column under the dash. The module is located in the steering column cover in the E38 and E31.
It includes an inductive coil (ring antenna) that is installed around the lock cylinder. The inductive coil provides a power supply for the transponder and also enables data transfer to occur.
The functions of the transmitter/receiver module are to supply a power source for the transponder and to control the flow of data between the transponder and EWS II control module. The coil of wire receives an A/C voltage from the transmitter/receiver module when KL R is switched on.
The A/C voltage and coil react as a transformer and supply operating power to the transponder chip. Data transmission between the transponder and receiver module takes place over a radio frequency (RF) 125 KHz amplitude modulated AM signal.
The transmitter/receiver module is linked to the EWS II control module through a single wire bi-directional data interface. The transmitter/receiver module converts the AM data signal from the transponder into a digital output signal that is sent to the EWS II control module.
RENDER: 1.0x
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.