What will do if you find your BMW E46 can not start? For educational purpose,this article share all potential causes. Hope it is helpful! Aftermarket equipment is another common source of parasitic draw.
E Vacuum leak Vacuum leaks usually cause rough running, or misfires, but a large vacuum leak can prevent starting. No voltage in any of the tests indicates a defective switch. To test the switch, bypass it by inserting a jumper wire in its connector. Move the shifter back and forth a few times before starting, this may enable start, if the switch is faulty. If there is no code stored for this sensor, but no spark is suspected, check for spark.
This usually causes CEL, too. Trying to start the car with a second key is another simple way of ruling out a no start due to a non working key. If your car is equipped with an additional aftermarket alarm system, make sure it is disarmed.
BMW E46 Can Not Start:All Possible Reasons Caused!
A scan with a BMW specific scanner usually reveals if the unit is faulty. There may be no codes stored. If the pump runs with the terminals jumpered, but not with the relay in place, the relay is defective.
There are a number of ways to verify:. No start at a later time may be due to loss of compression. See Section 6. Fuel gauge maybe inaccurate, reading too high. Remove the wire from this terminal, measure voltage on the wire with the key in start position. This is done by applying direct voltage to some of the terminals. The starter can also get stuck. If it is stuck, this may get it going. Necessary cookies are absolutely essential for the website to function properly. This category only includes cookies that ensures basic functionalities and security features of the website.
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Ignition Lock Cylinder Replacement
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We took the key apart and used the microchip inside to test whether it gets recognized by the immobilizer. The car regognized the chip when it was placed nearer to the keyhole than it would be when placed inside the key. The key was taken to a microchip solder who resoldered all the connections on the circuit board and voila, the key worked as new after that.
Had a really weird issue with my BMW d e Put the key in ignition, all lights turn on, but when starting, nothing. No change in lights, no clicks, no cranking. So, I thought it is the immobilizer, anti theft or neutral clutch sensor.
Or weak battery or bad key or faulty keyhole ignition system or just corroded terminals on the battery. Tried everything, even moving the car back and forth while in gear to put the starter in a different positon and tried to bang the starter a couple of times.
Tried opening the car via door lock with a key. Tried almost everything, but nothing helped. I was surprised that my battery only had Very unlikely that the car would start from that low voltage. So I need to charge the battery I thought. So I let it run for 2 hours with everything turned off to charge the battery. Ps, to test the battery level voltage via your dashboard on BMW e46, go like this. Read the value means You are good with anything above 12V I could hear the pump hitting up the fuel, that was the only sound coming from outside.
But I was playing around… and finally got it running. Update: seems that this was only a temporary fix or a coincidence. Testing the sytem — display panel. I am not sure what this does a reset? Hold on the left button on the dashboard trip counter reset button 2. When it says test, release it and press again until number 19, release button 3. Says off, quickly press again 4. Press until 2 and release now everything turns on After doing this a couple of times the e46 started normally.
Press left button on dashboard trip reset button until says Test 2. Post Author: Tom Pai.If you have tried to start your vehicle and all you get is a clicking sound, the issue could be with the starter motor or the starter solenoid. The clicking sound is the starter solenoid trying to force the starter gear to engage the engine. However, the solenoid could be too weak to force the gear to engage or the bearings inside the starter motor could be frozen.
To determine which component is defective, you can bypass the starter solenoid. Locate the starter motor under the vehicle. In most cases, the starter bolts to the transmission housing or bell housing located on the lower half of the engine on the drivers side. Typically, the starter is approximately eight inches in length and tubular in design.
The solenoid bolts to the side of the starter motor and has two wires connected to it. Locate the two metal contacts on the back of the starter solenoid. One starter has a wire that goes up into the engine bay. This is the starter wire and it connects to the ignition switch.
The wire connected to the other metal contact goes to the starter motor and is called the jumper wire or generator wire. Place the metal blade of an insulated screwdriver across both metal contacts.BMW Key Problem (Spinning Ignition) - MillerTimeBMW - DIY 5
This bypasses the solenoid and creates a direct connection between the starter motor and the ignition switch. Get a friend to help you by turning on the ignition with the key.
The engine will not start because you bypassed the solenoid. Listen to the starter motor. If you hear a consistent humming sound coming from the starter motor, the bearings inside the motor are fine and the solenoid is defective.
Solved: Turn key no crank BMW E46 320d (2004)
If the motor sounds choppy or fails to start, the starter motor is defective. This article was written by the It Still Works team, copy edited and fact checked through a multi-point auditing system, in efforts to ensure our readers only receive the best information.
To submit your questions or ideas, or to simply learn more about It Still Works, contact us. Step 1 Locate the starter motor under the vehicle.
Step 2 Locate the two metal contacts on the back of the starter solenoid. Step 3 Place the metal blade of an insulated screwdriver across both metal contacts. Step 4 Get a friend to help you by turning on the ignition with the key. References Type2: Troubleshooting Starters.
About the Author This article was written by the It Still Works team, copy edited and fact checked through a multi-point auditing system, in efforts to ensure our readers only receive the best information.The ignition lock cylinder wears out over time making it hard to unlock the steering wheel and start your BMW E The tumblers inside the lock cylinder wear out leaving you with an inoperable ignition lock.
You may not be able to turn the key or it works only when jiggled. There is also an anti-theft pin in the lock cylinder to prevent the ignition lock cylinder from being forced to the start position. If forced without the correct key, this pin shears and the lock cylinder then will spin freely degrees. This can add to the problem with a worn tumbler. When you attempt to turn unlock the ignition, it rotates freely without unlocking. If you have any of the above issues, replace your ignition lock cylinder.
Before you condemn your ignition lock cylinder, check whether your ignition key is in good shape. Try a spare key and if you still have an issue with binding, replace the ignition lock cylinder. To avoid marring the trim if you need to pry anything, work with a plastic prying tool or wrap a screwdriver tip with masking tape before prying out trim panels, switches or electrical accessories. Keep in mind that when your car was serviced before, parts may have been replaced with different size fasteners used in the replacement.
The sizes of the nuts and bolts we give may be different from what you have, so be prepared with different size sockets and wrenches. Protect your eyes, hands and body from fluids, dust and debris while working on your vehicle. If you are working with the electrical system, disconnect the battery before beginning. Always catch fluids in appropriate containers and properly dispose of any fluid waste.
Recycle parts, packaging and fluids when possible. Do not work on your vehicle if you feel the task is beyond your ability. Vehicle models change and evolve, as they grow older, so the vehicle shown in our illustrations may vary slightly from yours. If something seems different, let us know and share your info to help other users.
Do you have questions or want to add to the article? Leave a comment below. When leaving a comment, please leave your vehicle information. Turn ignition key to on position--also known as accessory position. Large Image Extra-Large Image. Insert straightened paper clip or mechanics wire into hold near key slot green arrow. Wiggle paper clip until you feel it bottom out. Once it bottoms out, lock cylinder will feel loose if wiggled.
This photo shows wire and how it unlocks ignition lock cylinder retainer and allows it to be removed. The wire passes through retainer and releases it.I've been seeing a number of posts on the forums and I've gotten at least a dozen calls from E46 owners that are having problems with their key not starting their car.
In particular the EWS - Immobilizer not allowing the car to start. The keys that came with the car have a small transponder chip in them even the valet key which doesn't have buttons which gets read by the car when the key is in the ignition. The transponder gets it's power from the EWS pickup coil located around the ignition switch.
The code sent by the transponder is picked up by the EWS coil and compared with a list of good codes programmed from the factory. If it's not on the list the EWS deactivates the starter motor. Everything will still work, radio, lights, doors, windows, everything. Just not the starter motor and you can't push start the car either since it tells the DME not to fire the injectors. In some cases the car will intermittantly start with only 1 of the keys, the other keys start the car fine.
In this case the problem is repairable with my key repair service. Be sure to let me know that the key is a no start key. It only powers the keyless entry portion of the remote lock, unlock and trunk release functions. Another one is recoding the key to the car will help See recoding procedureNO, No it won't. The recoding procedure only codes the general module to the key for keyless entry, again it had nothing to do with the EWS system and will not help.
The only place to get a new working transponder is from the BMW dealer in a new key. Below is an E90 key that I tore apart. The EWS transponder coil is the black rectangle on the center left side and the EWS chip is the big rectangular chip in the upper left of the right picture. It car does not have a general module and the remote is permanantely sync'd to the car. Again there is no key sync procedure.
Anyone who says their is is wrong!. Rectangular keys like the one below do not have a key resync procedure and this also goes for diamond shaped keys for E60 or E For the first generation diamond shape key E39, E46, E52, E53, E83 and E85 the EWS transponder coil is 7 in the picture below and works in conjunctions with several other components on the board to support the immobilizer function.
If you are looking for a new key that will be able to start the engine you will need to buy from BMW. Any of the keys will start the engine, plastic wallet key, valet key or master remote key.
If you have the plastic wallet key or the valet key I might be able to turn that key into a remote key for a lot less than the dealer. Upgrade to remote key. General Module 5 Repair Service.We will certainly always recommend the services of NordicVisitor.
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A minimal fee but again well worth it). Communication was great, every time I had a questions Cecilia or someone from their team answered straight away. I highly recommend Nordic Visitor to anyone who is looking to take a vacation in Scandinavia. The nothometoday, United States Iceland Complete, August 2012 Wonderful!.
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Solved: Turn key no crank BMW E46 320d (2004)
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