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Typically, KL R, which in BMW lingo means turning the ignition to position 1, is related with Terminal R. The same goes for KL 15, Terminal 15, and the second position of the ignition.
I’m probably not responding to your question, but perhaps something in my ramblings will help you find the solution you’re looking for.
In This Article...
What does terminal R mean?
Actually, Terminal R is “running,” while Terminal 15 is an accessory (also known as Position 1 on the Ignition Switch) (aka position 2 on ignition switch). There is a distinction because devices like headlights are powered in position 2 but not in position 1, indicating a difference.
An electromagnetic switch serves as the starter motor solenoid. When the starter button or ignition switch is in the starter crank position, power is provided to the coil windings at terminal 50. This makes it possible for electricity to move from the car battery to the starter motor.
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Measure the battery’s voltage both on and off using a cluster test; it should be around 12V on and 14V off.
Tell us what you receive. Anyway, undervoltage may also be the cause of some of your earlier codes; I have no idea what a terminal R is, but it may be coming from the alternator along with a terminal L. Simply a hunch.
Check the battery cables for tightness and corrosion, then check the engine grounds as closely as you can.
BMW E46 has a cruise control issue and is missing mpg.
The 2001 BMW E46 that a local garage customer purchased was having problems with the cruise control light staying on and the cruise control function not working. Other faults with the car included the trip information in the digital display not working; the only readout the car had was time; you couldn’t scroll through and select MPG or trip distance, etc. I was called out to the customer’s location today to help solve the problem.
The customer had already sent the dash and ECU out to be evaluated before I became involved, and the business that did the examination determined that there was an internal defect. After learning of this, the customer bought a new dash, but the faults persisted.
I connected my Delphi DS150E to the vehicle and ran a global scan, which revealed a few faults, including one related to steering angle (indicated by the yellow triangle with an arrow round on the dash), several others that were mostly related to the battery going dead at some point, and an 8c Terminal R fault fault code in the instrument cluster that was a currently stored code in the ECU and wouldn’t clear.
The light turned off after I used the Delphi to re-calibrate the steering angle sensor to address the steering angle problem, and I was able to remove the error from the ECU. Now, let’s try to fix the cruise control issue and the information that’s missing from the trip computer.
The fault must have been somewhere else as neither of the problems were generating a fault code. I was able to observe that the cruise control switches on the steering wheel were in good functioning order through live data because we could get the on/off data from the ECU.
So what was the issue with the 8c Terminal R? There must be a connection between this and the issues, but how?
After giving it some thought and doing some research, I discovered that the Terminal R error is related to an issue with a supply that is fed to the dash that is below 12 volts. I started by checking the fuse box; fuse number 10 controls the cruise control and trip information, and guess what? When the board’s missing fuse was replaced and the ignition was turned on, the cruise control light went out and we were able to navigate the trip computer’s options. The BMW is now operating normally, and the dash is not lit up like a Christmas tree, thanks to a fast scan back in the instrument cluster and the erasure of the terminal R code.
The garage will likely contact the lab that evaluated the original dash to inquire as to how they determined it was fried when it wasn’t the issue at all.
Issue with BMW E90’s Terminal R
I own a 2006 BMW E90 with a mechanical problem. Auto arrived on trailer. It only begins when pushed ( it is manual ). No wipers, no clutch, and no read on the brake switch.
I have replaced the cas 2 with a cas 3 starter kit after discovering in Ista that RLS is not working ( cas, ecu and key ).
In addition, the DSC module makes a clicking noise that lasts between 5 and 5 seconds.
Relays and fuses are in good condition. I changed the battery positive distributor (it has fuses), but the clutch and brake switches are still hidden.
On the ista, I verified that terminal R on the JBE module was active, but on the cas, terminal R had no voltage.
603-18-2020, 11:28 AM (Rambobo last modified this post on 03/18/2020 12:40 PM.)
I removed the cas 2 from my car and installed it there, however terminal R is still lacking 12 volts.
How I’m going to act: I’ll disconnect all terminal R users using this pinnout (https://www.newtis.info/tisv2/a/en/e91-320d-tou/Z5sgnYd) to see if anything changes.
On a BMW, what is Terminal 30?
For control systems that are in use when the driver is not present, use the Terminal 30 Fault. For instance, the automatic climate control module (ACCM), footwell module (FRM), instrument cluster, and trailer module (AHM) all fit this description (IHKA)
On a BMW, what is Terminal 50?
The starter motor activation voltage comes from CAS at terminal 50. The most common initial cause of a burned CAS module is a subpar engine ground cable. In order to determine whether there is activation voltage at the starter motor and, if not, to examine the CAS module.
If you have the time, I’d want to hear the theory behind this. I can see that the internal cas relay likely uses a diode to connect terminal 30 to 50 to the white relay in your photo. I don’t have a schematic for a circuit. Why would this occur if the engine ground was bad? It is impossible for the burned-out diode in your photo to be the one connected to the terminal 50 o/p. The tiny track is burned, and that is presumably the relay coil diode since it is too small. Why did this occur?
How can you start a BMW in terminal 15?
Regarding keyless ignition switches, I have a stupid query. I’ve seen that as a first step, you “change your ignition switch to R or terminal 15” in a number of manuals and how-to instruction pamphlets. Could someone kindly explain how a 2005 745i keyless ignition works? See, I warned you that was foolish, but I’m not really sure of the solution. Thanks
what instructions should be included in flyers? You intend to start the vehicle. Put the remote in your lap, depress the brake, and push the start/stop button while sitting in the car.
What occurs if a BMW battery is not programmed?
The car will overcharge or undercharge you if you don’t register it with it. When you install a new battery, the automobile will overcharge it since older batteries receive more charge than fresh ones, which causes your battery to die sooner.
What occurs if the BMW battery is disconnected?
As long as the battery isn’t overcharged, BMW uses a sealed AGM battery that doesn’t release hydrogen gas. That makes it possible for it to be positioned inside the vehicle as opposed to under the hood. There is absolutely no problem keeping it unconnected indefinitely, as others have stated.
What is 30A terminal?
The positive battery terminal is 30a. Find out everything that is connected to the cable close to the battery by following it. gk1 , 09-10-2020 07:56 AM. Super User on AudiWorld
Is registering a BMW battery required?
Battery registration is necessary since all of the more recent BMW models include Intelligent Battery Sensors, or IBS, as they are known by BMW. Are you unsure if your BMW has IBS? This useful guide to model years and particular models will help you determine whether your BMW has to have its new battery programmed each time it is replaced.
- Seven-Series E65/E66 chassis from 2002 and after
- 6-Series E63/E64 chassis from 2003 and after
- 5-Series E60/E61 chassis from 2004 and after
- X5 E53 chassis with N62 engine, 2005 and newer.
- 3-Series E90/E91/E92/E93 chassis from 2006 and after
- X5 E70 chassis from 2007 and after
- X6 E71 chassis for years 2008 and beyond
How can I reset my BMW now that the battery has been changed?
One of the vehicles with the most advanced intelligent operating system in the world is the BMV. Therefore, the first thing you must do after every hit or replacement of an object in the car is to restart the entire vehicle.
This setup enables the computer to anticipate your next replacement requirement and alert you to it. After changing the battery, resetting the BMW computer is a quick and easy process.
- First, turn on the controller again.
- Step 2: Press “Trip” to activate it and make it light.
- Step 3: Hold down the “trip” button while continuing to press and hold it until the “Reset” button shows up on the screen.
- Reset in Step 4
Does my BMW require reprogramming after a battery change?
Let’s first focus on what BMW battery registration genuinely is before delving into the procedure. Battery registration, to put it simply, is the process of notifying your car that a brand-new battery has been installed. Importantly, it must be done every time you replace the battery in your BMW, model year 2002 or later.
The car adapts the amount of energy required to recharge to operate at peak levels as your battery ages and gradually loses its ability to charge. The battery needs more charging the older it is. By registering your battery, you can inform your engine control module (also referred to as DME — Digital Motor Electronics) that a new one has been installed. As a result, the vehicle will reset the old battery statistics and won’t attempt to overcharge the new battery under the assumption that the old one is still in place.
In addition to registering, you must also code your BMW computer. No matter how different or similar your new battery is from your previous one in terms of specifications, it will still be necessary each time you change it.
What is the time required for a BMW computer to reset?
My automobile won’t turn over. After some web study, it appears that the ECU is most likely the problem. How can the factory settings be restored on a BMW computer?
In less than two minutes, find out if your auto insurance is being overcharged.
Amazing investigative abilities! Unplugging the negative battery cable for 10 to 15 minutes will reset a BMW ECU. For most BMW models, this ought to be sufficient to reset the ECU.
You can also try jumpstarting your car to reset it if this doesn’t work. If a low battery is the problem, this will also be helpful!
However, if you still have trouble starting your car after jumping the battery, you should speak with a mechanic to find out more about what’s going on.
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How do I connect the battery first, which terminal?
First the good, then the bad. Disconnect the negative cable from the old battery first, followed by the positive. Positive and negative connections for the new battery should be made in reverse order. a
It can be difficult to remember which terminals to detach and which to rejoin while changing your car battery. But it’s crucial to connect them in the proper sequence.
Remember to first unplug the cables from the negative terminal, which is typically black and marked with a minus (-), before unplugging the cables from the positive terminal, which is typically red and marked with a plus (+). Always use caution when touching a metal object to both of the battery’s terminals at once.
Once the connections are disconnected, release the clamps holding the battery in place and carefully remove it out of the battery tray.
Make sure the wires and both terminals are rust-free before installing the new battery. You can clean them with water, baking soda, and a wire brush if they are rusted.
After that, set the battery’s terminals correctly on the battery tray and drop it onto it before clamping it. Connect the new battery now by connecting the positive terminal first and then the negative terminal in the reverse order. Ensure that the battery is properly fastened.