Questions tagged [computer]

Catch all tag which can refer to the "brain" of the car which can control the engine and/or transmission of the vehicle. This would include such terms as PCM (powertrain control module), ECM (engine control module), PCU (powertrain control unit), ECU (engine control unit), and many, many others.

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'09 Prius II - No Start. Hybrid light and CEL on

I got a new (used) prius a couple weeks ago. Apparently sold by a weasle. It's never started reliably, and the red triangle light comes on / off. Jumping it would start it though. I replaced the low ...
0 votes
1 answer
17 views

16 Honda HRV 2WD Acceleration problem

The Vehicle dash lights on left side lit up and the drive, nuteral, park, and shifter light signal flashing on the dashboard, and operating properly but The Vehicle doesn't go over 40mph and won't go ...
0 votes
2 answers
232 views

2005 Toyota Corolla intermittently won't start then stalls after 1 mile

Last night I turned the car off, then tried to restart but got nothing... no click no crank... nothing. But have lights (interior and exterior), alarm, horn, radio etc. I set the alarm and left it. ...
4 votes
2 answers
855 views

2008 Saturn Aura: Programming the mileage on a used BCM

HELP! I replaced the BCM in my 2008 Saturn Aura with a Used BCM. I then took it to the dealership to have them program it. Now I notice that my odometer isn't working, so I looked at my invoice from ...
5 votes
1 answer
137 views

ECM replacement - starter runs during reprogramming?

(mid-90's Buick) Someone I know had an ECM injector drive output go bad. He got a replacement ECM online, but had to take it to a shop (not a dealer) to get it 'initialized' (If that's the right word....
1 vote
1 answer
224 views

Spikes while observing my obd2 scan tool

I have a 2005 chevy avalanche 1500 4wd automatic. I bought this last summer and ever since I got it, it has had problems one after the other. I recently bought a OBD2 scan tool and started observing ...
3 votes
1 answer
3k views

Pontiac Grand Prix won't start, horn would honk, electrical system goes crazy

Some facts: My dad has an aftermarket Remote Keyless Entry Not aware of any aftermarket theft system, does not use keyless start He's used 410 watt power inverters through the cigarette lighter but ...
0 votes
0 answers
3k views

Two engine codes 18DAF110. 18DAF118

I have a 2008 Range Rover HSE 4.4 engine and I got a control module code 18DAF110 and another code 18DAF118 could you let me know what these codes mean thank you
3 votes
1 answer
90 views

I took the battery off my car 2006 Honda CR-V

I took the battery off and when I put it back on the car the alarm wouldn't stop, after a few hours I tried various ways to start my car but it didn't crank , there's no lights in dashboard or inside ...
1 vote
2 answers
2k views

Ford Figo not starting immobilizer

I have a ford figo 2012 petrol automatic that is not starting. When I turn the ignition to “ON”, all the lights on the dashboard come on and the immobilizer light blinks. The car used to start before. ...
2 votes
2 answers
11k views

New ECM, car will not crank, VIN is programmed correctly

I have a 2013 2.5L Chevy Malibu LS, which had a bad ECM (Water got in and destroyed part of the board causing random sensor errors and randomly killing the car when driving, randomly deciding not to ...
1 vote
0 answers
45 views

1994 Ford Aspire: Different computer for automatic vs manual?

This is a 1994 Ford Aspire (prior to OBD II, fortunately). It has a simple 3-speed automatic with no computer controls. It needs to pass smog, so I can't just gut the emission controls, and my "...
1 vote
3 answers
1k views

Convert Manual to Computerized "Automatic"

I'm wondering if this is possible. With a conventional manual transmission (say, Tremec T56), could I install a small computer to press the clutch, change the gears, etc? Obviously, I would have to ...
1 vote
2 answers
568 views

Can I charge my laptop using a simple USB cigarette lighter

I’m not sure this is the same thing as the 100w inverter i saw mentioned in another answer. This is supposed to work for phones but I’ve never used it for my laptop as I’m afraid it’ll break it. It’s ...
14 votes
5 answers
59k views

'09 Chevy Malibu - No Crank, No Start - Heavy Troubleshooting Already Completed

Answer: Turns out the computer was shot, entirely non-functional. Swapped one out and the car started right up. For future readers: The computer is a likely cause if the vehicle has power, yet ...
4 votes
3 answers
30k views

Do I need computer reprogramming when transmission is replaced?

Honda Odyssey 2003: I'm replacing a transmission, and a local mechanic will help me to swap it in my garage. I've been told at a local shop, that in order to install remanufactured transmission ...
2 votes
2 answers
779 views

How can I determine if a 2015 Nissan Leaf can be monitored/controlled via an app?

I've seen in reviews that Nissan Leaf's have a phone app that can monitor and control its charging and climate functions. For example, you can view on your phone how much power the car's battery has, ...
0 votes
2 answers
934 views

BMW E90 2005, 318D to 320 engine question

I am owner of BMW 320d e90 2005 sedan. My car's engine had to be replaced, so I found another car which has the same engine but is technically 318d. Can you tell me if I can swap the engines without ...
1 vote
2 answers
360 views

Information from an EEC-IV on 92 Ford F150

Good evening. My general question is, what information, preferably real time, can be obtained from the EEC on a 92 Ford F150? I'm particularly looking to hook up an Arduino and digitizing the gauges ...
1 vote
1 answer
102 views

Reprogramming computer for Dodge Ram Van 1999

I had a problem my old computer on my 1999 Dodge Ram Van and have now acquired a new one, however the one I have acquired has not been programmed for my van. My mechanic tried to program it by ...
1 vote
0 answers
131 views

2004 Vitz door/trunk control(ler?) problem

I have a 2004 Vitz which uses a key with built in 1 button remote. This remote is supposed to unlock the doors and allow the boot switch to operate. (Car is started with a regular key) The doors work ...
0 votes
0 answers
34 views

Worldwide Envrionmental Products EIS 5000 Analyser: “Communication Error with IOBoard”

I have an old EIS 5000 fuel analyser which displays the error "Communication Error with IOBoard". The system was used a long time ago without problem until this problem came and was never solved. The ...
3 votes
2 answers
1k views

Can I access the signal from the wheel speed sensors?

We have a bunch of trucks in the workplace that drive inside the premises. I want to calculate their exact running time. Currently, we can capture engine hour data by tapping the signal of the ...
1 vote
2 answers
4k views

How important is it to register the new after-market battery in BMW vehicles?

According to BMW dealership the new after-market battery must be registered to the on-board computer, because, otherwise, the car would think that the old battery is still in and it would end up being ...
0 votes
0 answers
357 views

How to completely eliminate the reverse beep on a 2012 Prius

I followed these instructions (same as described in method 3 of a wikiHow page) to "disable" the reverse beep on my 2012 Prius using a bluetooth OBD2 adapter and a mobile app to connect to it. Type: ...
2 votes
1 answer
942 views

Could the OBD2 connector be used to switch gears?

What the title says, could I use an OBD2 code to control gear shifts in an automatic car? For example send an OBD2 code via a microcomputer like the Raspberry Pi. The car in question is a 2008 BMW e60 ...
0 votes
0 answers
98 views

mazda dealer thinks i have changed the CVN code in my car

My mazda dealer thinks I've chiptuned my car even though I didn't. Help what to do. Here's their message: I could again find no DTC and as there was also no manual data started with checking the ...
4 votes
1 answer
5k views

PCM Bench Testing

1997 Ford F350, 7.3, 2 wheel drive. PCM part number F6TF-12A650-AYG. OK the question is how to diagnose the PCM without codes due to the battery being dead? I have it out of the truck and was hoping ...
8 votes
2 answers
30k views

ECM vs. PCM vs. ECU?

Engine Control Module Powertrain Control Module Engine Control Unit Reading about them online, they seem to be the same thing, computers. So what are the spcific difference between them? Is the other ...
1 vote
0 answers
49 views

What is the best course of action when Jeep Wrangler transmission has been driven with low fluid levels

A small pinhole occurred in the transmission cooler lines near the radiator in a 2012 Jeep Wrangler. It has automatic transmission. Over time the owner kept adding transmission fluid when needed and ...
0 votes
1 answer
28 views

AC compressor stopped working, electrical/program issue

My Ac was working fine untill 2 days ago, I was accelrating normally and then generic error messege appeared on the dash and the AC stopped! (fans and compressor). I tested the fans, they are woking ...
2 votes
0 answers
2k views

Toyota Corolla alarm system problems

I just bought a Toyota Corolla 2013 Special Edition last week. Just after a few days, suddenly once I entered the key, turned and I was going to start the engine, everything started blinking, the ...
1 vote
0 answers
68 views

Forester repair

If anyone can help. I have error code P1700-TPS Circuit Malfunction-Check codes in TCM. Error Code P0731-Gear 1 Incorrect Ratio Error Code P0122 TPS Switch A Circuit-Low Input. I have asked ...
3 votes
5 answers
1k views

Simplest installation of car-powered car-pc

Am posting here as this question seems to be considered off-topic on both the electronics and the Raspberry sister sites. Would like to install a carputer (Raspberry Pi), and am wondering about the ...
8 votes
2 answers
14k views

OBD-II difference between signal ground and chassis ground

Am planning to install a carputer (Raspberry Pi) in a 2005 Ford Mondeo, replacing the car stereo. The Quadlock connector to the stereo apparently includes CAN bus, so I am thinking I will get a USB ...
3 votes
1 answer
633 views

2006 Solstice - car won't turn over following engine replacement

I recently installed an engine (complete from oil pan to the valve cover) from a 2010 Malibu in my 2006 Solstice. (Replacing a blown engine.) The car will not crank / turn over. Symptoms include: My ...
3 votes
3 answers
19k views

How does the Dodge Avenger know when it's time for an oil change?

Just a couple weeks ago, I took my 2012 Dodge Avenger to the shop for (among other things) an oil change. However, the car is already alerting me that it needs an oil change barely 1,000 miles later. ...
1 vote
0 answers
108 views

Replace old Bosch computer with Motronic?

I have a 1996 B5254S engine that came with a Bosch LH-3.2/EZ-129K computer. The next model year 1997 they started using the Motronic 4.4 computer for this engine. Can I just switch out the Bosch for ...
3 votes
1 answer
143 views

Installing mobile apps on a car board computer

I'm an owner of a Honda Accord 2011 and I'm wondering whether it's possible to install mobile apps on my onboard car computer. It would help me because my manufacturer installed a default navigation ...
1 vote
1 answer
457 views

CASE / CKP relearn without GM Tech II. 09 Chevy Malibu

I need to do a CASE Relearn procedure following a CPU swap on an '09 Chevy Malibu. Is there a way I can do this without taking it to a GM dealer who has the Tech ii device? Are there lower cost ...
5 votes
1 answer
8k views

Manual ECU with Automatic Car

Have 92 Accord with 1.8 VTEC. The Installed Engine is From 98 Accord. The transmission is the original which came with 92 accord. This transmission is operated by Kick Down cable and does not have any ...
2 votes
2 answers
107 views

Where should I mount the engine management electronics in a 1993 Ford Mustang?

Bought myself a 1993 Ford Mustang (2.3L I4, the 5.0L V8 was sold with it but the car was an I4 from the factory, so it lacks the stronger brakes, suspension, etc. -- The engine would be a drop-in/bolt-...
0 votes
1 answer
186 views

How do I unlock the computer that controls the dash?

My Toyota car would not start so I had the fuel pump changed. It still would not start so we changed the computer. Now, it is throwing all kinds of codes when I drive. It starts shutting itself down ...
3 votes
0 answers
80 views

Ignition causing problems with Electrics?? Ford Focus 06

Really hoping someone can help as taken to a mechanics and they keep charging me $$ although they cant find the fault! My computer system in 2006 Ford Focus doesn't work sometimes ( usually at the ...
2 votes
1 answer
11k views

OBD2 to USB Cable for Windows 10

One could put an argument that this question is about software and not mechanics, however now-days everything is computerized (including cars and their diagnostic tools) so I believe this question ...
3 votes
1 answer
342 views

What computer does a Toyota Corolla use?

I have a 2000 Toyota Corolla. I took it to AutoZone because my check engine light was on, and they plugged in some electronic thing that read the problems. What computer / electronic system is keeping ...
21 votes
4 answers
2k views

Are there requirements for building a car-PC and it's software?

I am currently rebuilding a car as a hobby. As a part of it I am planning on building in a car PC with custom software for some multimedia usage, navigation and some diagnose usage. I know there are ...
7 votes
1 answer
4k views

Is there a way to use a PC as an ECU for testing CANBUS Sniffer devices?

Is there a way to connect CANBUS sniffer device to a PC (computer) with CAN-H and CAN-L pairs and test the sniffer device? I want to convert my PC to an ECU emulator, connect a CANBUS sniffer device'...
5 votes
3 answers
2k views

Can the warning chime tone of a 2007 BMW 525i be changed, or shortened somehow?

Can the warning chime tone of a 2007 BMW 525i be changed, or shortened somehow? The chime of this car comes from the computer and is used for most warnings such as seatbelt, temperature, door-open, ...
8 votes
1 answer
11k views

Why would my odometer reset to the same mileage whenever I turn off the ignition?

I have a 2000 Nissan Altima and the odometer (not trip meter) reads 86186 miles when I first start the car. As it's driven, the odometer seems to work correctly, incrementing miles. But if I turn off ...