Automotive

In addition to ignition, power and monitoring gauges and lights, today's motor vehicles feature computerized engines, transmissions and braking systems, electronic mapping systems, Bluetooth and Internet connectivity, sensors that detect other vehicles, motorized seats, and digital audio and video systems; several manufacturers are producing electric and hybrid automobiles and self-driving cars.

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Hello Guys I hope you can help me I am in Mexico, I've taken my car to the service center and they don't seem to know how to fix the problem.  

It could happen that the car will not start,   so I go pop the hood and push all the fuses near the battery and go back to turn it on and it starts up with out a problem.  Then the small motor symbol appears.

There are cases where it starts perfectly and the motor symbol is off, when I am driving all of the sudden it loses power (CHECK ENGINLIGH TURNS ON)it doesn't fully turn of the car keeps going., but its kind of scary when your driving in middle of traffic.   So when I hit a bump or something it does this.

I can be driving in the express way where there are no bumps and it still dose it.

Have you guys experienced something like this if so have you found away to solve it?

I hope you can help me cause this is driving me nuts.

Thank you

Jose
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Consider a typical Automotive Embedded  Software System.  

A discrete input signal is 0 or 1.  An example of discrete input is ignition ON or OFF.

After discrete input signal is debounced or a state change is latched, is discrete input signal still raw value?

Second question:   Should Electronic Control Unit (ECU) low level software debounce discrete inputs or just read the real time state of discrete input?  Are there any exceptions meaning some discrete inputs should be debounced, whereas others don't need to be debounced?
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I bought this vehicle zero miles 2 years ago. I put 27k miles on it. My question is can I change engine oil by myself? Is this will mess with the warranty?
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This is my remote. I use rechargeable batteries and every day my remote shows low battery but when i test them, they all shows green. I bought batteries from dollar store and try them, they also die out in less than 3 days. They are AAA rechargeable batteries. I think something is wrong with my remote.
pic1.jpgpic3.jpg
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In a typical embedded automotive embedded system, I believe data is only transferred from RAM to EEPROM once every key cycle, right before embedded system goes to sleep ?
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I have 2015 RAM 5.7 V8. Is it possible I can sleep on the back bed with something I can put easily on the top just in case if rain? I don't have that kind of money to buy extra camper to put on it. Some thing cheap I can use to sleep on it.
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Can you please send me a link of any cheap gps for commercial vehicles?
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My Honda Airwave was bought in 2008 & I heard it's assembled/made in Japan.

Would the following spark plug fit into it?  Hope the Airwave is not country specific:
https://www.amazon.com/gp/product/B00IXBM1NC/ref=ox_sc_sfl_title_83?ie=UTF8&psc=1&smid=A3SJJYHRWE1WHQ

My car occasionally 'cough' while in D gear but not with lower gears & I tot
of swapping the spark plug to see if it helps
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Can you please tell me where can I buy this tent?
screenshot.PNG
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Vehicle's A and B are stationary on level ground. Vehicle A is 12 inches from the rear bumper of vehicle B.
The driver of vehicle be unknowingly relaxes their foot on the brake pedal.

Formula to calculate the speed vehicle A was going when their front bumper hit the rear bumper of vehicle B which was over a distance of 12 inches.
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Hello,

I have a great deal of data in regards to automotive part fitment.  each row contains a minimum year column and a maximum year column like this
min yr       max yr      make     model    sub          engine
2001          2005           ford       f150    crewcab    v8

I need to convert it to
yr               make        model        sub            eng
2001          ford            f150       crewcab       v8
2002          ford            f150       crewcab       v8
2003          ford            f150       crewcab       v8
2004          ford            f150       crewcab       v8
2005          ford            f150       crewcab       v8
next vehicle would start here

I have 50k rows like this and am looking for a productive way to achieve this.   I know I could separate out the rows, select blanks, populate downward from the cell above plus one but have no idea how to state this as a macro and make it not extremely manual and time consuming.  I have attached a before and after sample.


All assistance is much appreciated.
ymmtest.xlsx
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Hello,

I'm wondering if anyone knows where I can find a PDF service manual for Hyundai Elantra 1996?

Cheers,
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Is it possible to connect a standerd single din CD player and a digital media reciever in a vehicle using the two device's wireing harnesses wired into the vehicles wireing harness.
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is 'model code' something that each auto manufacturer should have or is it optional?

for example, in https://www.toyotaofthedesert.com/new-inventory/index.htm
you see a 4 digit code for each vehicle kind
https://www.capitalfordofwilmington.com/newvehicles
(3 digit alphanumber)

but for another manufacturer, it is not so mentioned:
http://www.stevensonhonda.com/new-inventory/index.htm

i was not yet able to find a database of such model codes

question: is model code almost like a nickname for a car from its maker? is it an mandated code to distinguish exact kind of same car (for example sports edition of car has different model code than the regular version of the same car etc)
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base
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Shopping for a car battery:
Sears has a 26 and a JC26 and an EP26. All the same price but the 26 has 650 cranking amps and the others are only 525.
Sam's Club has a Duracell 26R.

4 different numbers associated with the 4.
Why and what is the difference?
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Attached is CAN Transceiver Datasheet. This IC is wired in our Microcontroller based Electronic Control Unit.

CAN_A_H1 and CAN_A_L1 are connected to CANH and CANL of Transceiver.  Also, CAN_A_H2 and CAN_B_H2 are connected to same CANH and CANL ?
TJA1145T_FD-Transceiver.pdf
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Attached is CAN Transceiver Datasheet.  This IC is wired in our Microcontroller based Electronic Control Unit.
 
What will be CAN High (CANH) and CAN Low (CANL) Voltage when CAN Transceiver is in sleep mode?  

To verify these voltages are correct in sleep mode, measure CANH with respect to ground?   And measure CANL with respect to Ground?
TJA1145T_FD-Transceiver.pdf
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Attached is CAN Transceiver Datasheet.  This IC is wired in our Microcontroller based Electronic Control Unit.
 
Page 5 shows the pinout.  How to measure current at BAT Pin ?  Current Probe can be clipped to wire but this is IC Pin.
TJA1145T_FD-Transceiver.pdf
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The image shows the position of the door locking mechanism. That part will not turn the proper way to allow the doors to be closed. When the engine is running and the power door lock button is pressed, the 4 door locks try to close but fail and stay open. When the engine is turned off, the master door lock on the left side door can be pressed and it closes the door locks on all 4 doors. By door lock I mean the manual switch on the arm rest will close. Then the doors can be closed manually and the car is locked. The left side door does not close. If an effort to examine the right front door, we have the lock part in the same position and can not get it back like normal. So we have two doors that won't close fully which makes the red lights on the dash go off. The light that says a door is open. We have to use bungie cords to keep the doors as closed as we can with the tension and we have to unhook the battery since the two doors are not closed.

edit: I watched a video on such a door lock. When the door handle outside was raised the mechanism seen does rotate back to the normal position so the door can be closed. Whether this can be done with the battery not hooked up is not known. I'll try to raise the right outside door handle because that is the one that I used a screwdriver to lock the mechanism. It may then be able to the closed. The left side is the one which developed the symptom the earliest.
q
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My computer is running Windows 10 Pro, 64-bit.  My C language files or my code (program) are stored in the hard disk.  

The old and new version of WindRiver Diab Compiler are stored in Linux Server?

My bash profile used to contain path to old compiler.  To compile, I ran Winscp to access Linux Server.  Then, I dragged my C language project to Linux Server.  I opened the command window from Winscp and invoked make program to build my executables.  This all worked fine.

To build with new compiler, I changed path in my bash profile but my code (program) is still getting build with old compiler.  The generated .map file shows path to old compiler.

My bash profile is stored in my windows desktop.  Does Winscp read bash profile when it is invoked?  How does it know to read bash profile from desktop?  Why is my program not getting built with new compiler?
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Following is what some source says about Autosar OS Multicore Support:

1.  Communication via shared memory.  Spinlocks are used for critical sections.

2.  You can not share resources between cores.

Isn't this contradicting ?   I believe memory is a shared resource.  If the memory can not be shared between cores, then, how can they communicate via shared memory?
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I'm creating C language controller application that will run on host.  The purpose of this application is to control Lauterbach Trace32 Debugger remotely.  

To achieve this remote control, controller application will call Lauterbach C language APIs.  These APIs will be commands that will be sent over UDP Socket to Trace32 Debugger Software.

Controller Application and Trace32 Debugger Software are running on the same host.  The APIs is a C language library that will be linked with the controller application.

I want to send command to write a value to a integer variable.  This means I need to pass pointer to integer but API is expecting char *
Please see Page 81 of attached document.  API is T32_WriteVariableValue ( )
api_remote.pdf
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Hello,

i would like an answer to this Questions :
i have a diesel VW Passat 1900
when i start the car  -it uses a lot of power from the battery
Questions :
- how many times can i start without leaving it running approx?
-  how many km's must i run before it's fully charged - in a townlike environment - approx; or how long in time must it run
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I have 2003 Chevy Silverado 5.3 L V8. I have been using this vehicle since 2006. I took it to a some small auto shops to look at the radiator and other rubber hoses make sure they are in good shape. They told me it looks ok accept the firestone. They told me it looks old you need to change them. Dealer charge 120 dollars for the pressure test. I just don’t know should I blow my 120 bucks or just drive it. It has over 180,000 miles on it.
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Automotive

In addition to ignition, power and monitoring gauges and lights, today's motor vehicles feature computerized engines, transmissions and braking systems, electronic mapping systems, Bluetooth and Internet connectivity, sensors that detect other vehicles, motorized seats, and digital audio and video systems; several manufacturers are producing electric and hybrid automobiles and self-driving cars.

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