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The BMW Range
3 Series
E46
Central Locking Kaput..
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<blockquote data-quote="jarance" data-source="post: 328310" data-attributes="member: 21"><p>Just found out that the E46 have 2 modules. I think my problem is related to DWA rather than EWS.</p><p></p><p></p><p>Copy and paste from bimmerfest (QS7 author)</p><p></p><p><span style="color: DarkOrchid">1. Your master key w/remote keyless entry buttons has TWO features:</span></p><p><span style="color: DarkOrchid">DWA - keyless entry/anti-theft which locks/unlocks the car by pressing buttons integrated into key...and it activates/deactivates the alarm siren. BUT...there is NO LIMIT to how many times (up to) FOUR keys can be programmed into the DWA system. (this feature requires the use of the battery inside the key) </span></p><p><span style="color: DarkOrchid">EWS - drive-away-protection (immobilizes the car by shutting down spark/fuel/ignition until the ISN (individual serial number) of the ECU, EWS control module, Ring Antenna around the ignition switch, and key all communicate with each other). (this feature is self-powering & works by sending a low frequency 125 KHz AM signal to the EWS Control Module which then converts it to a digital signal) </span></p><p><span style="color: DarkOrchid"></span></p><p><span style="color: DarkOrchid">2. You car's DWA system can be programmed (by anyone) to accept the RF (radio signal) from FOUR master keys w/remote buttons to lock/unlock the car (this is the 1st key you program using the instructions below...PLUS 3 additional keys which is mentioned in the instructions below)</span></p><p><span style="color: DarkOrchid"></span></p><p><span style="color: DarkOrchid">For example, since you have the new style key that recharges when it is in the ignition switch...if/when the battery dies in your key...you could possibly buy a used old style key off ebay and program it to lock/unlock your car doors then stick the original key (with the dead battery inside it) in the ignition to start the car. You could keep doing this over and over again buying a used key and program it to lock/unlock your car. These "used" keys will never start your car...but you can follow the simple instructions below to program it to lock/unlock the doors & trunk. </span></p><p><span style="color: DarkOrchid">3. The EWS control module will only except the ISN (individual serial number) from the transponder embedded inside of 10 keys (this is ANY combination of BMW keys including the NON-REMOTE keys as well)...after that, you must purchase a new EWS Control Module and start all over with a new set of (up to 10) keys. The programming of the key and EWS control module can ONLY be done by BMW using its DIS proprietary software (and some people have some bootleg software that can also do it).</span></p></blockquote><p></p>
[QUOTE="jarance, post: 328310, member: 21"] Just found out that the E46 have 2 modules. I think my problem is related to DWA rather than EWS. Copy and paste from bimmerfest (QS7 author) [COLOR="DarkOrchid"]1. Your master key w/remote keyless entry buttons has TWO features: DWA - keyless entry/anti-theft which locks/unlocks the car by pressing buttons integrated into key...and it activates/deactivates the alarm siren. BUT...there is NO LIMIT to how many times (up to) FOUR keys can be programmed into the DWA system. (this feature requires the use of the battery inside the key) EWS - drive-away-protection (immobilizes the car by shutting down spark/fuel/ignition until the ISN (individual serial number) of the ECU, EWS control module, Ring Antenna around the ignition switch, and key all communicate with each other). (this feature is self-powering & works by sending a low frequency 125 KHz AM signal to the EWS Control Module which then converts it to a digital signal) 2. You car's DWA system can be programmed (by anyone) to accept the RF (radio signal) from FOUR master keys w/remote buttons to lock/unlock the car (this is the 1st key you program using the instructions below...PLUS 3 additional keys which is mentioned in the instructions below) For example, since you have the new style key that recharges when it is in the ignition switch...if/when the battery dies in your key...you could possibly buy a used old style key off ebay and program it to lock/unlock your car doors then stick the original key (with the dead battery inside it) in the ignition to start the car. You could keep doing this over and over again buying a used key and program it to lock/unlock your car. These "used" keys will never start your car...but you can follow the simple instructions below to program it to lock/unlock the doors & trunk. 3. The EWS control module will only except the ISN (individual serial number) from the transponder embedded inside of 10 keys (this is ANY combination of BMW keys including the NON-REMOTE keys as well)...after that, you must purchase a new EWS Control Module and start all over with a new set of (up to 10) keys. The programming of the key and EWS control module can ONLY be done by BMW using its DIS proprietary software (and some people have some bootleg software that can also do it).[/COLOR] [/QUOTE]
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