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E46 M3 (2001-2006) Engine: S54 - Max Hp: 333 hp at 7,900 rpm / 262 lb/ft at 4,900 rpm
Total Produced: 45,000+ - Years Produced: 2001 to 2006.


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Old Tue, Mar-13-2018, 08:00:50 PM   #1
mrgizmo04
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Default EWS immobilizer

Hey mates,
Recently scanned the car and found this 0F code in EWS Vehicle Immobilizer for "Voltage supply, EWS3 control module".

Around same time as I replaced the battery in the car, started getting code 90 for "Battery voltage: open circuit" in ZKE Central body electronics.

Is this the key transponder dying on me, or something else?

Appreciate the insight.
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All DIY: 330 ZHP steering rack, diffsonline 4.1 diff with rem polish, E60 short shifter lever, AKG black diff bushings/subframe bushings, Rogue rtab, WPC rod bearings, Beyer driveshaft, full SS (SS stepped V1, catted S1, resonated S2, SS sport), Sachs clutch/flywheel, rear main, VANOS bullet proofing with anti-rattle, valve adjustment, cooling refresh, Ohlins R&T/Swift 448f 672r/GC street tops and camber plates, AFD E85 Proflex kit.
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Old Tue, Mar-13-2018, 10:54:41 PM   #2
terraphantm
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Default Re: EWS immobilizer

Car battery might just be getting old. Otherwise I'd check for a short circuit or popped fuses (particularly any that might be common between the EWS module and the GM5)
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Old Tue, Mar-13-2018, 11:45:01 PM   #3
mrgizmo04
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Default Re: EWS immobilizer

Quote:
Originally Posted by terraphantm View Post
Car battery might just be getting old. Otherwise I'd check for a short circuit or popped fuses (particularly any that might be common between the EWS module and the GM5)
Just replaced the car battery right before getting these codes...It seems to be around 12.56V when sits overnight or two, when running, it's around 13.84V, so seems ok there, or is that in the lower range of what a healthy battery is expected to put out?

Got this one, if that matters: https://www.autozone.com/batteries-s...19458_300932_0
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'85 528e 164k miles (sold)
'05 M3 6MT coupe

All DIY: 330 ZHP steering rack, diffsonline 4.1 diff with rem polish, E60 short shifter lever, AKG black diff bushings/subframe bushings, Rogue rtab, WPC rod bearings, Beyer driveshaft, full SS (SS stepped V1, catted S1, resonated S2, SS sport), Sachs clutch/flywheel, rear main, VANOS bullet proofing with anti-rattle, valve adjustment, cooling refresh, Ohlins R&T/Swift 448f 672r/GC street tops and camber plates, AFD E85 Proflex kit.
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Discussing EWS immobilizer in the E46 M3 (2001-2006) Forum - Engine: S54 - Max Hp: 333 hp at 7,900 rpm / 262 lb/ft at 4,900 rpm
Total Produced: 45,000+ - Years Produced: 2001 to 2006. at BMW M3 Forum.com (E30 M3 | E36 M3 | E46 M3 | E92 M3 | F80/X)