Questions tagged [electronics]

Electrical components that monitor or control the engine and other vehicle systems, or that provide entertainment, information, or network access. Engine Control Units (ECUs), their sensors, radios, navigation systems, and rain sensors are examples of *electronic* components. Compare with *electrical* components which distribute, switch, and consume electricity as a source of power – such as the battery, alternator, fuses, lights, starter, and sparkplugs.

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1answer
29 views

Safety around permanent trickle/float charger connection for car battery

I rarely use my second car, as a result, the battery often drains too much by the time I need it. I have a slow charge battery pack which works if I want to wait a while to get to the minimum level to ...
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76 views

What is this electrical component circled in blue in this engine bay?

I was wondering what this component could be. i couldnt post full size picture since it was over 2mb but full picture also showed a part that looked similar to the part circled in blue. i think that ...
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72 views

Mitubishi Outlander 2018. Replacing SIM card

Whatever I'm doing I'm not find the SIM card in my car. I removed the glove box (and see the white computer behind it. I removed the plasic below the glove box and still doens't find the SIM card, or ...
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1answer
35 views

2007 Ford E350 electrical problem

My 12 passenger ford E350 2007 occasionally (random times while driving for random duration 5 -40 minutes) loses power to the: dashboard stero and windows. What can be wrong with my car? How do I ...
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3answers
915 views

Control Systems of Modern Engines

This may be a bit of an odd request. I teach high school computer science, in part through game design. I have a student who wants to be an auto mechanic who was placed in my game design class because ...
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43 views

What is this wire connected to the back of my radio?

I'm hoping to replace the radio in my '05 Saturn Ion, so I pulled it out to see what connections it has. According to this website, this radio is compatible. I know I'll have to deal with the wiring ...
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13 views

I found out that a CECM for a double decker bus was faulty.The new unit I tried to fit ended up giving same fault.Does the new unit need programming

The good second hand CECM I later fitted was able to down load and the fault fixed.Do I need to program the new unit.The Chassis Electronic Control Unit(CECM) is for a volvo double decker bus
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50 views

Prevent Stereo Shutdown During Ignition

I've got a Honda Civic 2006 that I've recently added a nice aftertmarket Android Auto head unit to because I got used to the one I had in my old work car (a 2018 Audi A3). This unit works great, ...
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29 views

2008 Toyota Prius Door Lock Problem

About a month ago, I noticed that my Prius started to chirp and unlock 5 times in a row whenever I used the proximity sensor on the handles (both driver and passenger side, but not the trunk). Shortly ...
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40 views

Main relay click test results

Civic vti coupe 1999. I heard that you can test a main relay by checking for clock with each key turn. So every time you turn the key you will get hear one click. Here’s what I found: Lock to ...
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27 views

is this main relay faulty, what should I do now?

Civic coupe vti 1999 @ 163k miles. Cars not starting and have just inspected the main relay and can see one of the points seems to have worn to the point you can see blue underneath it. Will this ...
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1answer
75 views

Elusive cause to a lumpy idle

Having been around cars for a long time, this has me stumped. 2005 Renault Megane Estate with 1.4 K4J engine. Approx 125 000 km. Engine is restless at idle. Revs are unstable and feels like misfiring. ...
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2answers
83 views

Can you attach multimeter to battery terminals while car running/charging?

I cannot remember how but recently I blew the fuse on my multimeter. All I remember was the car was running when it happened. Can I attach the multimeter to battery terminals to check voltage while it ...
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1answer
86 views

How does a OBD II misfire detection monitor know “exactly” which cylinder is misfiring?

I do know that magnetic pick-up coils are used to detect crankshaft position and these sensors are used to tell which cylinder is misfiring. These magnetic pick-coils do not produce a smooth & ...
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34 views

Loss of Window Control in an Old Car; Fix or Let It Go?

I have a car that is about 20 years old. (2001 Lexus RX300) I recently repaired the exhaust and some other things, and I think that mechanically, this car could last me 5+ more years. What to do about ...
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31 views

Renault Logan 2011 unknown electrical issue

I have a Renault Logan 2011 since March 2018 and it has run for about 173,000 km so far. About a year back it started having this strange problem where during initial start the automatic transmission ...
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1answer
26 views

Toyota Yaris xp9 2006 Clock is inactive

I have Toyota Yaris xp9 Model 2006. When I start car. I do not see any more clock. It is totally off. Could you please inform me the reason why this fault happened and how I can repair it? Thank you.
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61 views

Volkswagen Polo 2009 bluetooth problem

I have a Volkswagen Polo from 2009 with some electronics I think are upgraded through the time. The display which shows the media radio and stuff also shows an option for phone, phone messages, and ...
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1answer
48 views

Do I need a battery maintainer, a portable jumpstarter, or a completely new 12V battery?

Hybrid vehicle has not been used for several months due to COVID-19 pandemic. Vehicle has a 3 year old 12V AGM battery. Battery is not used as a true "starter" battery; it just boots the ...
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31 views

Climate Control Module Temp Numbers Jump Around

I have a 2003 Hummer H2 and if I wanted to change the temperature in my vehicle, I would do so by turning the knobs on the vehicle's climate control module. One of which is for the driver side while ...
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47 views

How does engine braking mapping work?

Some recent cars and a lot of bikes can change engine mapping and change engine braking electronically. For instance, my bike is not an automatic bike, so it has mechanical gears and I am able to ...
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1answer
49 views

What type of terminal pins do radio harnesses use?

Brief backstory: I got a car that was a great deal and the radio is the only thing wrong with it. They told me that while they were swapping out the OEM radio it wouldn't accept the new one and then ...
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61 views

Intermittent Electrical Issues Jeep Wrangler 1998

I just bought a 1998 Jeep Wrangler today. When I took it for a test drive yesterday, everything seemed to work fine, but when I was driving it home today some electrical issues came up. The first ...
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104 views

Alternator whine fix for aftermarket stereo

I bought a Dual MPR420 as a cheap replacement for my 22 year old Toyota Camry that I keep around as a utility car. I used the right Metra harness, spliced using heat shrink butt connectors and ...
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1answer
81 views

Motorcycle USB Port on Accessory Switch while connected directly to battery?

I have a TW200, and I am wiring a usb port with a voltage read out. The only way to get a accurate reading of voltage is to connect to the battery directly. Testing with the low beam wire that comes ...
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1answer
131 views

How is alternator directly connected to vehicle electronics?

I've tried a lot of research but I can't find specifically what I'm looking for no one has actually mentioned this and I've looked at various wiring diagrams which still don't prove how this is ...
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1answer
32 views

How could a battery issue lead failures in ABS, Cruise control, stop-start, etc?

We have a 2014 VW Golf (diesel automatic) and recently we have started getting sporadic "christmas tree" errors when starting it. A few seconds after starting the engine, we get error after error ...
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1answer
90 views

2012 nissan murano interior light won't go off

2012 nissan murano interior light doesn't go off after door is closed. It does go off after 15 min. as it says in the manual.
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1answer
45 views

powered window and back windscreen wiper anomaly

At first i thought it was random, then i realised that there is clearly a pattern: I start the car then i check and both the wiper and the window works as expected. 20-30-40 minutes down the road i ...
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30 views

Why there is ticking noise and turn indicator lights blinking in car while driving even if I'm not touching the lever?

I own a Tata motors Indica DLS V2. I've noticed that there is ticking noise (similar to the one produced during turn signal) and turn indicator lights blink while driving, even if I'm not even ...
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2answers
672 views

Electrical isues on j10 nissan qashqai

I have a problem with my Nissan Qashqai, its a late 2010 so its a facelift model. The lights flicker when I am driving, when im parked, basically all the time, my windows roll down slowly, some ...
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2answers
48 views

How do I disconnect these plugs/connectors?

It's from a light indicator for my toyota security system.
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2answers
153 views

Should ground wires be fused?

I'm installing a ham radio transceiver into my car, which draws up to 25 amps and can't be used with the 12V socket. Instead, I'm following this and this and similar guides, which recommend running a ...
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34 views

Car engine got wet through low water pass - any potential unseen damage?

Last night it was raining hard. There was a bridge that was flooded but I couldn't tell because the ruler marker sign was knocked down. As I approached it the car got deeper and deeper into water. ...
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53 views

What is this 5-pronged electrical outlet attached to the alternator used for?

I have the below hookup right next to the engine (CAT 3116) and I'm not sure what it is for. I tried googling this, but didn't find a hookup that was similar. The approximate circumference of the red ...
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507 views

Ford Transit - ABS Pump no power

I have a 2.2 FWD Ford Transit from 2009. My ABS/ESP and the red brake warning is on as well. When reading the error codes I normally don't get any ABS related codes. But when erasing the error codes,...
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1answer
53 views

12V 10A outlets: Slight smell of burnt copper at 8A. Is the outlet still safe now?

When I accidentally depleted our car battery, I charged it's battery from the inside outlets, using a 0-30V 0-10A bench power supply device. The car has 3 outlets. One individual outlet is rated for ...
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1answer
68 views

Unidentified component on carburetor

A couple of days ago I went over to a friend who owns an older KTM motorcycle and as I was having a look on his motor I noticed a component on his carburetor which looked like something electronic but ...
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1answer
49 views

No electrical power triumph street tripler

the battery on my bike was dying, I needed to jump start it to get it running, however this time (it's never done this before) the battery started smoking, so I took it off straight away and brought a ...
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1answer
619 views

Cannot operate car audio system, Only works in reverse gear

From few days in my Honda Fit GP5 2014, the car audio system (pioneer AVH-265BT) can only operate on the reverse gear. If I'm not on the reverse gear setup is fully locked and I can't control anything....
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0answers
21 views

Nissan Primera P11-144: electro «control box»?

On my car, Nissan Primera P11-144, there is a couple of electrical malfunctions on secondary systems, namely on climate control and ceiling lighting: CC blows only hot air regardless of set ...
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0answers
22 views

S550 Mustangs - route wire from fuse panel to center console?

Are there any tip and tricks to routing wire from the passenger footwell fuse panel and into the center console? I'm looking to add an accessory that would require a power cord to pop out right below ...
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0answers
537 views

Will a magnet mount affect the performance of a radar detector?

I am in the market for a Uniden R3 radar detector but I'm not really enthused by most of the mirror mounts out there. It distracts from my line of sight to have something up on my mirror like that so ...
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2answers
89 views

Honda Civic 2000, Engine Control Unit replacement

I need to replace the engine control unit, ECU, of my Honda Civic 2000, my car doesn't have an immobilizer, it starts with a basic metal key, so, do I need to program the used ECU replacement?
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3answers
1k views

Red and yellow wires to aftermarket stereo system have no power

I have a 2001 Chevy Silverado diesel 2500 4x4. I took my old stereo out which had power to it, and I installed my new stereo. Now the red and yellow wires have no power! (They did before.) I ...
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20 views

RX 300 (2001) doors lock/unlock problem

I have Lexus RX 300 (2001). 3 doors starts not responding to lock/unlock in most cases. But sometimes works. Only one rear and trunk doors works correctly. Also works correctly manually with keys....
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2answers
139 views

Windshield Wipers turning on on their own

2012 Ford Focus SE My windshield wipers have been going crazy. The other day, after parking my car and taking the key out my windshield wipers turned on. Eventually they stopped after a few minutes. ...
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1answer
122 views

Audi A7 - 2016 model without parking assist: is the installation of the module “plug & play”?

I have the intention of buying a used Audi A7 Sportback from 2016, without the "parking assist" option. Since i'm a newbie to this kind of stuff, i was wondering if it's something i can install myself ...
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1answer
64 views

Backup lights, monitor and alarm sometimes don't work when backing up

When I switch the stick to R on my automatic gear, the backup lights, monitor and alarm sometimes don't work, sometimes do. It feels as if it's random when there's current in the wires. When they ...
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1answer
85 views

How do you quiz the electronics of a Mercedes?

I am planning to inspect a 2012 Mercedes S550 for possible purchase. How do I interrogate the electronic system of the car to get information about things that currently may not be working, or about ...