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
24 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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65 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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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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1answer
30 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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3answers
18k views

Does disconnecting the battery have negative side effects?

A recent answer at a sister site suggested disconnecting the battery routinely. I often disconnect my battery before embarking on a hike. Especially if I am in a remote location. This is a nice way ...
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2answers
210 views

How can I swap wires/pins on generic aftermarket O2 sensors?

I purchased some generic aftermarket O2 sensors for my 2002 Land Rover Discovery 2, which were significantly cheaper than the "official" Land Rover replacement parts. Unfortunately after installation,...
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1answer
79 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 ...
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2answers
84 views

Is there a way to transmit a CAN bus signal over a high current DC line?

I would like to use a high current cable with batt + and chassis ground from the vehicle to the trailer, and also use the same cable to transmit a CAN bus signal to the trailer. Is there a way to get ...
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0answers
28 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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3answers
24k views

Why do we use a relay and switch to control on/off of horn circuit instead of using a simple swtich?

I know that a horn requires a larger amount of amperes to operate than many other electrical systems. I am reading a book and I stepped into this situation: ..shows a relay application in a horn ...
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1answer
42 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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1answer
602 views

Is there a rev matching device?

I understand that rev matching is acquired skill by practicing and driving more. I'd like to know if there was a device you could attach to your car that would detect and notify you if engine rev is ...
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34 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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2answers
57 views

Installing electronics next to SRS Airbag controller in car

I have bought an add-on for my car stereo (GROM USB3) which adds USB and Bluetooth capability for playing music and answering calls. This module is contained in a little box with 4 ports, and connects ...
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1answer
32 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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1answer
2k views

Can I Use The Stock Honda Pilot Subwoofer On an AF Headunit

I'm thinking about getting the Pioneer AVH-X5800BHS headunit for my 2005 Honda Pilot EX but I want to keep costs as low as possible, so can I use the stock subwoofer by tapping into the Sub+ and Sub- ...
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cigarette lighter is always on

In my 2006 ford ka the cigarette lighter socket is always on, which means that when I turn off the engine I have to unplug the USB thingy I've got in there. It's a bit annoying and I'm constantly ...
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5answers
35k views

What happens if I disconnect the battery while the car is running?

There are some comments on the question Are there any modern diesel engines that require electricity to continue running? suggesting that disconnecting the battery while the car is running can damage ...
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1answer
38 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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1answer
123 views

Can radio communications be fully disabled in a Tesla?

Can radio communications be fully disabled in Tesla vehicles like the Model S ? I guess this question has two parts: software disablement and hardware disablement as follows: (1) Software ...
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0answers
46 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
33 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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3answers
5k views

Mitsubishi Colt trip computer mode change?

I have a Mitsubishi Colt (2004 model, 5-door) where I've replaced the factory head unit / radio. Unfortunately this meant I lost the capability of switching the trip computer modes (instant/average ...
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1answer
52 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
59 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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2answers
4k views

Citroen C4 Grand Picasso 2007 Multi Function Screen C failed

I've just bought a C4 Grand Picasso, love the car, super practical and comfy. The electronic dashboard is working fine, but the multi-function screen portion is completely blank. So I have a speedo,...
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1answer
31 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
122 views

Wish to charge battery in caravan from car alternator while travelling

I would like to run the 12 volt capability of my 3-way caravan fridge whilst travelling rather than the gas. If I put a 12 volt battery in the caravan what system do I use to charge this battery from ...
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2answers
336 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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30 views

What are my options to add Bluetooth connectivity to a 2007 Honda Civic FD4 (without FM Tx)?

2007 Honda Civic FD4 didn't come with Bluetooth support. I am aware of adding the Bluetooth connectivity through an FM transmitter to use the car audio setup, but I'm looking for a better way with ...
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1answer
789 views

OBD Accessory External Power Supply

I recently purchased the Zubie Car Hotspot from Verizon that connects to the OBD port on a car. I have mine connected to the Tesla Model X, unfortunately I need the connection to remain always on but ...
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0answers
28 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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4answers
9k views

What voltage does the ECU need?

I am tracing the operation of the ECU. I want to supply it with power but what is the ECU voltage input that I should supply?
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2answers
74 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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2answers
44 views

How do I disconnect these plugs/connectors?

It's from a light indicator for my toyota security system.
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2answers
79 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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0answers
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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3answers
882 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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7answers
132k views

Fixing a water-damaged remote key

I have a Toyota Camry 2011 and two remote keys. One of the keys was soaked with water two years ago. Of course, it is not working. I went to a dealer and they failed to recover it. Is there something ...
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0answers
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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0answers
336 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
45 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
59 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
35 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
355 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
19 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
15 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
296 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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0answers
19 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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1answer
798 views

2013 BMW electronic oil level check fails to complete

My wife's car is a 2013 BMW 335i with M-Sport package. The engine has no dipstick so the only way to check the oil level is using the menu-driven display. However, this never completes. ...