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Bmw starting issues

Ok.. So I ordered a New EWS and Key and gave to the Shop... Now they said it starts a couple times but after a 3rd try it does not and they are afraid to blow the EWS.. Any suggestions?

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6ya6ya
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Posted on Jan 02, 2017

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SOURCE: 1992 BMW 320I starting issues

It is possible that you have the two small wires reversed or one is touching battery lead connection.

Posted on May 09, 2009

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SOURCE: with my bmw318i 1997.i have difficulty starting

look for bad grounds in the ignition circuit.the corrosion is creating a voltage drop,but time and heat decrease the resistance..

Posted on May 13, 2009

  • 437 Answers

SOURCE: 1997 bmw 328i not starting

Come on give us more information. Think if you were trying to fix your own problem and you had to explain the problem to someone else with exactly no knowledge of what's going on.

1st off....a key with bad electronics and reader will open the door and that's it.

So that being said does the key turn the engine? If so the key, the program and ecu are ok. Say the engine cranks but doesn't start. Fuel pump. unscrew the access plug on the fuel rail and see if any fuel squirts out. NO......don't ever do this when it's hot..........not that yours is because it doesn't run but I had to say that. The millisecond you turn your key over to get it to try to start...the fuel pump comes on and pressurizes the entire fuel system.

Got fuel pressure, the engine turns but still no start= ignition spark plug engine computer problems.

Posted on Nov 05, 2009

  • 324 Answers

SOURCE: BMW 320d Hard to start last couple of times and

either the wiring that goes to you starter is showing age, or the starter itself is getting weak, also check the age on your battery

Posted on Sep 18, 2010

c1apton15
  • 3400 Answers

SOURCE: E36 BMW 318i. Have serviced

Your cars Alarm/disabler is on. It's an anti theft device built into CPU. You need BMW or a competent specialty shop to look at it.

Posted on Mar 02, 2011

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95 bmw 325i cranks but wont start.Has fire to plugs,checked fuel pump fuse, relay and main relay,no ground to fuel relay socket,no hot or ground going to fuel pump,,suspect DME ??? Was running fine un


Try to disarm the alarm system first,if that doesn't work,try your spare key,if it works the key is faulty.if this fails,put it on diagnostic machine.,since it can be EWS.

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Error code 2f44 bmw won't start tried to clear but comes back after every crank


Fault code: 2F44 EWS preventing manipulation.
This is a common fault code flagged by BMW vehicles when the EWS (also known as the CAS module or immobilizer) no longer communicates with the DME.
Some of the most common causes, for this condition, is battery failure or ignition key failure.
Many times, a customer will bring a BMW into the shop or have it towed into the shop, and explain that "the car just won't start, suddenly". Upon further investigation, it is common for a technician to find poor battery condition or a failed ignition key.
In the case of poor (low) battery condition. A low voltage level has caused the immobilizer (CAS/ EWS) to lose its alignment with the DME.
In the case of a failed key, the immobilizer (CAS/EWS) cannot "see" the key in the ignition and therefore will not allow the vehicle to start. This is the "no crank" part of this fault.
So where do we start?
Using a factory level scanner, connect to the vehicle. After identifying the vehicle, proceed to the immobilizer module (CAS/EWS) and investigate if the key can be identified. If the key in the ignition slot cannot be identified and the key slot/ receiver is functioning correctly, then the key must be replaced. Typically, at this point, the first thing we want to do is ask the customer if another valid key is available. If so, let's try this first! If not available, a NEW key FROM THE DEALER, must be purchased.
NOTE: Aftermarket keys will not work i.e. E bay etc. The keys for these cars are VIN specific and need to be supplied by the dealer only!
A new key will work "right out of the box" from a dealer. Simply put it in the ignition, allow the vehicle to identify it (give it about ten seconds) and try a startup.
After replacing the key and regaining key identification the immobilizer (CAS/EWS) must be aligned with the DME.
Using a factory level scanner, perform the DME to CAS/EWS immobilizer alignment procedure. Clear fault code(s).
So, what about the battery?
All the above information is based on having strong battery voltage. In regards to BMW vehicles, 11.0 volts is NOT good voltage. These vehicles are designed to operate in the 12.4 to 13.0 (average) voltage area.
Before attempting to start the engine, a technician should perform a battery load test. When working with BMW vehicles, if the battery is marginal or too old (more than three years old) replace it.
NOTE: New batteries for later model BMWs (CIP vehicles from approx. 2004) will need to be registered. With a dealer level scanner, a tech can perform this function.
Note: As time passes BMW will change the way immobilizers are aligned. Typically, this happens when BMW changes manufacturers. If performing a standard CAS /DME alignment does not work, A later procedure is available. With late model (EWS 3 type onward) immobilizers, the tech must perform a three-step procedure. Using a dealer level scanner, carry out 1) CAS reset, 2)steering lock counter reset 3) reset the starter interlock.

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1 Answer

05 BMW X3 can i install a use dme and and program it using ISIS diagnostic and programing soft ware


No, the dme is coded by vin, the car would not start if you tried to program, you could perhaps snag the ews and lcm from the same car you got the dme from. But the. You might have a issue with the new lcm trying to update mileage to the old Komi. A lot less headaches to just order one coded from BMW why do you think it needs a dme?

Jan 20, 2013 | BMW X3 Series Cars & Trucks

1 Answer

1997 bmw 318ti starts and then wont start


New ignition switch.Do you have a immobolizer? (EWS 11).The coil end of the antenna could be shorted out.Or the transponder in you key could be defective.Check to see if you have a key fault message.Hopefully its just a starter.

Mar 15, 2012 | BMW Cars & Trucks

1 Answer

Wont turn over antitheft device preventing car from starting only have 1 key and it is the orriginal what do i do


close the doors. Put your Master Key in the door. turn it to the 1st position right, then 2nd position right, then 3rd position left. this will reset the starter immobilization sequence which is part of the anti theft system monitored by the EWS system. then put the key in the ignition and fire it up try this

Sep 12, 2010 | 2003 BMW 325

1 Answer

Bmw x5 doesn't start, all the lights turn on but no crank?


YOUR EWS CONTOL UNIT IS FAULTY TAKE YOUR VEHICLE TO YOUR DEALER WITH YOUR REGISTRATION PAPERS AND A NEW UNIT WILL BE INSTALLED.
AFTER THE VEHICLE STARTS AND YOU WAIT 10 TO 15 SEC THE MEMORY ON THE KEY WILL BE LOST.. DIGNOSITICS WILL DETERMINE WEATHER THE TRANSPONDER RING OR KEY IS FAULTY AND THE RELAY IN THE CONTROL MIT BE FAULTY MEANING THE UNIT WILL HAVE TO CHANGED.

Jul 20, 2009 | 2004 BMW 5 Series

1 Answer

N0 crank bat volt good at starter switch output good to to ews (electronic driveway protection control unit)but no output.Is thire a reset.


there is a rolling code that goes between the key and ews module. Aligning the ews and the key sometimes fixes the problem. (performed with bmw diagnostic equipment)Usually keys will fail over time due to the fact of how they are treated. If you have battery voltage at the largest post on the starter. I would check to see if while holding the key in the start position if there is voltage at the second largest post on the starter. this is the starter enable wire. if you see voltage on that wire then the ews system is working properly and the starter needs replacement. i would also try using a spare key, if you have one, to see if that fixes the problem

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