bmw 4 series trip computer

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• 1983 - 1991 (E30)

E30 Trip/On-Board Computer-Need Help

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Thread: E30 Trip/On-Board Computer-Need Help

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I'm sure someone's probably posted this question before, but the search on the forums didn't work for me... At the junkyard, I found a nice looking On-Board/Trip computer in an E30 and I am wondering if it is a direct plug in to my 1991 E30iX, that did not come with one from the factory. Does your car have to be pre-wired from the factory to use this? Or is the computer just a direct-plug in? (I haven't removed my old clock yet to see and wanted to check here before I start pulling things appart). Thanks, Brian

In one sense it is plug and play. But you need at least one wire harness, and you need a second wire harness, a code relay box and an alarm horn if you want to have the "code" feature working. I installed one in my 91 318i -- took a couple hours, but I elected not to install the code relay and lower wire harness. The following is a very helpful link -- the one I used. The only difference is the coding plug for a 318 is different than the one for your car. They are all listed though. http://zoso.no-ip.org/318i-obc.html

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Thanks a bunch for that help. My car did come from the factory with the alarm, so I wonder if the code box is all set to go? Also wondering if I should go clip the wiring harness from the car back at the junkyard, that I pulled it from?

The word "clip" does not belong near this operation lol. You should indeed get the wiring harness. It plugs into the back of the cluster, the turn signal, and iirc the gong speaker. Maybe a couple other things. You'll have to disassemble as necessary to unplug the harness from various things, and you'll need the OBC stalk if you want the remote function. In order to remove it you'll need to remove the steering wheel. Which entails sawing through the steering lock if you have no keys. When I say "alarm" I don't mean alarm in the usual sense. The OBC has its own alarm horn. If your car didn't come with an OBC, it's not likely to have the horn. You can look. It would be mounted on the bottom of the metal tray in front of the ds front wheel well (the abs pump is on top of this tray). The horn is under a sheet metal protective cover with slats in it. So. . . what it boils down to is, if you want the complete system, you'll probably have to pull it. If you just want the trip functions (mileage, avg speed, etc) like I did, don't worry about any of the stuff in the engine compartment. You don't need it.

Ok...gotcha...I'll trace the wires to their origins and "remove" them, not "clip them. LOL. My car had the security system, but I have also taken note of the horn in the right front, I always thought it was just the OEM alarm sytem, with the remote Key controller. LIke you, I just want this thing for the other functions. I always like doing things right though, so I'll run back to the Junk Yard. It's 55 here in VT...warmest its been since October....it should be nice and muddy. Thanks again, Brian

There was no E30 stock alarm. As Strad said, installation is doable but it's no quick task.

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Oh yeah that reminds me. The E30's horns are mounted one to a side. So, in the location I referenced, there will actually be TWO horns, one of which is under that cover I referenced and hard to see. That's if you have the OBC horn installed, which I doubt. Otherwise you'll just see one horn there, and one on the other side in the mirror location.

Yep...I've learned to realize that there is no such thing as a quick project, especially when dealing with our cars. Well, thanks for the info and help guys, and I'm off to the junk yard. I'm also in the process of taking out an M50 bottom end from an E34...I might drop an M50 in my E30iX....we'll see. Oh yeah, and btw, when I said, "stock alarm", I meant the alarm system that came intalled as an option from the factory. And you're right, I do have just the one horn in the engine bay and one by the mirrior. Thanks again guys.

Last edited by briangrenon2; 01-26-2010 at 10:57 AM . Reason: Automerged Doublepost

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2023 BMW i4 M50 Review: Treat Yo' Self

You don't need to pay more for dual-motor i4 M50 to have a good time, but it's hard to argue with more power and fun.

• North American Car, Truck and SUV of the Year (NACTOY) Awards Juror

You don't need the extra power, but it sure is nice.

The full-electric BMW i4 is essentially a 4 Series Gran Coupe four-door liftback sedan without a tailpipe. From the curbside, it is indistinguishable from its combustion-powered siblings. Unlike the iX , which screams "weird electric SUV!" with its avant garde design, the i4 flies under the radar. The 2023 BMW i4 M50 builds on this formula with a more powerful dual-motor electric powertrain and M Sport handling. The M50 may not quite be an electric M car , but with better whisper-silent performance, it's possibly the best Q car in BMW's lineup.

2023 BMW i4 M50

• Great power and acceleration
• Nicely balanced chassis
• Liftback utility and generous cargo space
• Flexible iDrive 8.0 tech

Don't like

• iDrive's learning curve is a steep one
• Much more expensive than competition

Up front, the i4 features a unique grille with the same self-healing tech found on the iX SUV. Small rock chips and scratches disappear from the glossy surface after a few warm days or a few minutes exposed to a hair dryer. Break out the measuring tape and you'll note that the i4 M50 is 0.2-inch taller than the M440i with a 0.1-inch wider front track -- barely any difference at all. That sounds simple enough, but is actually quite remarkable considering BMW has crammed an 83.9-kWh battery into the low-slung, coupe-like silhouette.

The battery lives under the i4's floor, which costs it a bit of cabin space but, again, not too much. The biggest changes are 0.4-inch less headroom (36.6 inches) and 0.7-inch less legroom (34.2 inches) on the second row and a cut to 10 cubic feet of trunk capacity (down from 16.6 cubes) due a loss of space under the load floor. Space above the floor is nearly identical and the i4 M50 retains its 40/20/40 split-folding rear seat, so most owners probably wouldn't notice when loading items into the power liftback.

Range and charging

The i4 even uses the same fuel door as the combustion-powered 4 Series -- look closely and you can even see the spot where the gas cap goes when filling -- but instead of a filler neck, there's a combined charging system port. Connected to an 11-kilowatt AC charger (Level 2), the 80.7-kWh of usable capacity (the rest is reserved) is restored in around 8.25 hours. At a 200-kW DC fast charger, the battery can be rapidly charged from 10 to 80% full optimally in around 31 minutes.  That charge time syncs nicely with the two years of complimentary 30-min charging sessions with Electrify America that BMW includes for new i4 owners. Of course, there are faster-charging EVs around, but until 200-kW-plus stations are much more common, the BMW's quick enough.

If you're really in a rush, the i4 M50 can add 97 miles of range in just 10 minutes at a 200-kW charger.

Sadly, the i4 has no front trunk -- usually a nice bonus feature on purpose-built electric vehicles -- so you'll have to store the portable charging cable in the trunk. However, unlike BMW's iX SUV, the Gran Coupe's hood can be opened by the owner. Though, there's not much under there to see besides a gigantic plastic cover hiding the electric hardware and two filler caps for wiper fluid and coolant.

The M50 performance variant of the i4 comes standard with 19-inch double-spoke M wheels, but my example upgrades to 20-inch wheels with staggered high-performance Pirelli P Zero tires -- 255/35 R20 in the front with 285/30 R20 rears. This change affects the look of the sedan, its handling and, more importantly, the range. On the standard 19s, owners can expect up to 270 miles of range per charge. With the stickier, heavier 20-inch wheels and tires, that estimate drops to 227 miles. That's still a comfortable amount of range for commuting and a bit of B-road fun, but frequent road-trippers looking to roam further should consider the less powerful, 282- to 301-mile i4 eDrive40 configuration.

During my week of testing the i4 M50 on the 20-inch wheels, I never charged past 80%, recharged once well before empty to test charging speed, and spent most of my time in Sport mode. After around 175 miles traveled in total, the trip computer reported an average of 2.6 miles per kWh used, slightly better than the EPA's converted estimate of 2.4 miles per kWh.

xDrive electric all-wheel drive

The i4 M50 upgrades to a dual-motor xDrive electric all-wheel drive setup. Powering the front axle is a 190-kilowatt motor; the rear wheels share a 230-kW unit. Total output climbs to 536 hp, which is a fair bit more than the eDrive40's 335 hp. The four-door coupe will scramble from 0 to 60 mph in just 3.7 seconds with its Sport Boost mode taking full advantage of the 586 pound-feet of instantaneous torque.

2023 BMW i4 M50 Is the Strong, Silent Type

Going from 0 to 60 in 3.7 seconds looks good on paper, but the way the i4 M50 effortlessly surges forward as you roll onto the accelerator has to be experienced to truly be appreciated. It's a totally different sort of thrill ride than even the M4 Competition xDrive Coupe's 3.4-second sprint. There's no drama, no wheelspin or even much sound at all, save for the whoosh of the wind and rumble of the tires -- only pure, eye-popping acceleration as the i4 M50 rockets forward like a bullet train.

Silent by default, the M50 features M-specific versions of BMW's Iconic Sounds -- generated sound played through the cabin speakers in concert with acceleration or deceleration. I'm usually not a fan of fake engine noise, but I found the M50's Sport sound theme to be a pleasant, surprisingly engaging rendition of a futuristic combustion engine. Designed by film composer Hans Zimmer and BMW Creative Sound Director Renzo Vitale, the system makes use of overlapping Shepard tones to create a sense of constantly rising urgency as the i4 builds speed.

In addition to customizing the sound, I was also able to tweak the performance of the i4 M50 via drive and regeneration modes. The EV features Eco Pro, Sport Boost, Comfort and Individual drive modes, which are toggled directly via a dedicated physical buttons. There are also multiple regeneration modes starting with the default Adaptive setting that uses the distance to the car ahead, navigation data and the battery's state of charge to determine how much regen to apply every time the throttle is lifted. This should net you the most efficient energy recapture, but I found it inconsistent and, at worst,  difficult to predict, not to mention jerky. I prefer to choose one of the static regen modes: low, medium or high. Disable low-speed creep in a menu to enable one-pedal driving where the i4 can slow to a stop without touching the brake pedal -- my favorite EV braking method overall.

The M50 comes standard with dark Shadowline trim and aerodynamic bits. Carbon-fiber trim is optional.

The i4 M50 also features standard M Sport physical brakes that work well in tandem with the regeneration system during dynamic driving and hard stops. The rest of the handling department is manned by the standard Adaptive M Suspension with electronically controlled dampers and variable sport steering. BMW's engineers have nailed the M50's driving dynamics. The EV is about 850 pounds heavier than the M440i xDrive, and that weight makes itself apparent on switchbacks and serpentine mountain roads. Still, the chassis still feels well-balanced; the new 48:52 front-to-rear weight distribution is actually reversed relative to the slightly nose-heavy M440i, which makes the steering feel lighter and more playful, while retaining a nice fingertip feel. (At least, it does in Sport mode; the Comfort steering setting feels a bit numb and overly light for my taste.)

BMW iDrive 8.0

The i4 uses, essentially, the same iDrive 8.0 software and hardware as the iX but tucks that tech into the 4 Series' more conventional cockpit. That seemingly small difference makes the i4 M50 much easier to live with than its more highly designed, minimalist sibling. For starters, the i4 features many more physical buttons and knobs on its dashboard and center console. The console itself sits closer to the dash and steering wheel for an easier reach when it's time to, say, pop into Sport mode, and there's less overall reliance on the touchscreen for simple tasks.

The i4 slots iDrive 8.0 tech into a more conventional dashboard and console.

There are still big, bright screens to enjoy. The i4 features the same 12.3-inch digital instrument cluster and curved 14.9-inch central touch display powered by its user-customizable iDrive software. As with the iX, I'm not a fan of the icon-heavy main menu with its grid of well over 30 little icons that can be difficult to navigate, scroll and precisely poke while driving. Thankfully, the icons can be reorganized for faster navigation and there's also a shortcut menu that can be populated with your eight most commonly used functions, accessible at any time via a swipe from the top of the screen. Alternative control methods -- including BMW's physical iDrive control wheel on the center console, "Hey BMW" hot-word voice input and search and air gestures -- give the driver even more flexibility and freedom from reaching over to the screen. Take the time to set it up to your needs and iDrive 8.0 becomes fairly easy to navigate, but that first week's learning curve is a steep one.

One of iDrive 8.0's biggest advantages is its always-on BMW Connected services and telematics data connection. This enables features like using your phone as a key, remotely monitoring the EV while charging or sending destinations to the car before hitting the road, but these advanced remote features -- as well as a number of in-vehicle features like intelligent voice assistant commands -- require a BMW User account and an active data subscription. 

Alternatively, users can take advantage of standard Android Auto and Apple CarPlay connectivity to power their maps and media with their phone. Both technologies support wired and wireless connectivity and feature the latest generations of their respective fast pairing tech for more seamless setup. Around the cabin, passengers will find three USB Type-C charging ports (two on the second row and one in the center console), a single USB Type-A data port for media playback or phone connections and an optional wireless phone charger at the base of the dashboard.

You can pop the i4's hood, but there's not much to see or service.

Driver-aid tech

BMW's standard suite of driver aid technologies persists here, inherited from the gasoline 4 Series. There's standard adaptive cruise control, lane-departure warning, blind-spot monitoring and forward collision warning with automatic city speed braking. Also standard are a rear-view camera and automatic high beams. The electric i4 also adds low-speed pedestrian protection external sound generation to the 4 Series' bag of tricks.

My example upgrades with a $700 Parking Assistance Package that adds a surround view camera, front and rear parking distance sensors and Parking Assistant Plus hands-free parallel and perpendicular parking assistance. Additionally, the box was checked for the $1,700 Driving Assistance Professional Package, which upgrades to lane-keeping steering assistance, adds a number of evasive and cross-traffic steering aid technologies and includes Traffic Jam Steering Assistant. This feature enables hands-free steering in low-speed (below 40 mph) traffic. It's a neat party trick, but considering the restrictive speed limitation -- which leads to almost constantly handing control back and forth in all but the most gridlocked jams -- I don't think it's worth the cost of entry.

Pricing and competition

The 2023 BMW i4 M50 starts at $68,295 including the $995 destination charge. That's $11,400 more than the i4 eDrive40 which many of CNET Cars' staff think is the sweeter spot in the lineup, with better value, excellent performance and better range, but it's hard to argue with more power and speed -- i4 M50 is a hoot and a half, so go ahead and treat yourself. That said, the BMW is also one of the priciest models in a class that includes the Tesla Model 3 Performance starting around $64,190 and the $58,800 Polestar 2 with Performance Pack, but the slightly larger i4 somewhat justifies its higher price with a higher level of luxury, fit and finish. With options and close to fully loaded, my example arrived wearing an $84,370 price tag.

Unlike the iX, the BMW i4 is not a purpose-built EV, so I expected the i4 to be full of compromises that come with cramming a big battery into an ICE platform. On the road, I was pleasantly surprised by how seamlessly and naturally the 4 Series Gran Coupe has handled the transition to full-electric. The i4 M50 is now my favorite version of this 4 Series chassis and one of the most fun electric cars I've driven this year.

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THE NEW BMW 4 SERIES GRAN COUPE.

Pure driving pleasure..

The new BMW 4 Series Gran Coupe combines sporty performance, elegant design, and a dynamic driving experience. Exterior highlights include the geometric mesh-style BMW Kidney Grille and sporty redesigned rear lights. Step inside and immerse yourself in the innovative technology, stylish upholstery, and incredible comfort of the interior.

A STYLISH APPEARANCE. A LASTING IMPRESSION.

The swooping roofline accentuates the elegant appearance of the new BMW 4 Series Gran Coupe. The dramatic curves of the exterior are complemented by the chrome-framed kidney grille, high-precision rear lights, and round tailpipe trim. Inside, the redesigned cockpit with a sporty two-spoke steering wheel and honeycomb air vents never fails to impress. Uncompromising driving dynamics guarantees unforgettable moments on every drive you take.

EXTERIOR DESIGN

DYNAMIC IN EVERY WAY.

A TOUCH DARKER. A SHADE MORE SOPHISTICATED.

Available Shadowline exterior trim adds high-gloss black accents around the windows and mirrors, accentuating the sporty silhouette of your Gran Coupe.

See your surroundings in a new light.

New vertically aligned Adaptive LED headlights make a bold statement while providing optimal visibility at all times.

Leave a lasting impression.

Optional laser rear lights with intricate laser fibers and precise lines add to the sleek aesthetic of your BMW.

New frame. Classic kidney grille.

A new silver mesh design and matte chrome trim gives the classic kidney grille an alluring update.

Elegance in motion.

The 18" Double-spoke style light alloy wheels painted in a dark grey finish reflect sunlight and look dynamic even when parked.

INTERIOR DESIGN

COMFORT MEETS ELEGANCE.

MORE POWER, MORE FEATURES, MORE FOCUS.

Step in and relax. The ambient lighting system sends cascades of soft light throughout the cabin, creating a soothing atmosphere for every drive. Other elegant interior touches include the modern dashboard and air vents adorned with a unique honeycomb design.

A sleek and sophisticated interior.

The available SensaTec dashboard with eye-catching double-stitched seams adds a sporty touch to the cockpit of your Gran Coupe.

Breathable, comfortable, luxurious.

SensaTec upholstery, a luxurious alternative to leather, offers incredible breathability to keep you comfortable on long journeys.

A perfect hold.

The new two-spoke steering wheel design and practical shift paddles offer greater control as you drive.

INTELLIGENT ASSISTANCE.

ACCESS EVERYTHING FASTER.

The new QuickSelect start screen on the BMW Operating System 8.5 provides faster access to your favorite entertainment and contacts.

Always up to date.

Check your vehicle's status, compare gas prices, arrange service appointments, and more. The My BMW App is your direct link to your BMW.

Your attentive assistant.

Simply speak to take control of your BMW. The voice-activated BMW Intelligent Personal Assistant is happy to answer any question or command. And with every interaction, it gets smarter.

FREQUENTLY ASKED QUESTIONS ABOUT THE BMW 4 SERIES GRAN COUPE.

What makes a bmw gran coupe.

The BMW 4 Series Gran Coupe is a four-door coupe with a low, sweeping roofline and the characteristically sleek, stylish curves of a classic coupe. Two-door models in this series include the 4 Coupe, 4 Convertible, as well as the high-performance M4 Coupe and M4 Convertible.

Does the BMW 4 Series Gran Coupe offer all-wheel drive?

The BMW 430i xDrive and M440i xDrive Gran Coupes are equipped with xDrive, BMW’s intelligent all-wheel drive. This advanced system offers enhanced traction in adverse weather conditions.

What is the seating capacity of the 2025 BMW 4 Series Gran Coupe?

The BMW 4 Series Gran Coupe has a four-door body with coupe-inspired stylings and can seat up to five passengers.

What smart features does the 4 Series Gran Coupe have?

The BMW 4 Series Gran Coupe is packed with innovation. Standard wireless Apple CarPlay® and Android Auto™ compatibility gives you access to your favorite apps and devices. The latest BMW Operating System 8.5 gives you control over vehicle settings, navigation, and more. The My BMW App lets you lock and unlock your vehicle, and start up from afar with the standard Remote Engine Start – so you can get going as soon as you step inside. The smart features of the 4 Series Gran Coupe make your drive easier, more connected, and can be operated intuitively.

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Trip reset button not working

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I just got this car and with my first tank of gas, I went to reset the trip meter and found out the button does bupkis. Am I missing something about the operation of it here? I don't know what's going on with it, has anyone seen this issue before? I did some Googling and can't find this having been an issue for anyone on this gen 7.  

Resetting it via iDrive doesn't reset the one in the cluster for some reason, and the button doesn't do anything when used as instructed. I'm worried the cluster has to be replaced to fix it, which would be expensive and annoying since that button is also used to reset the service interval after an oil change.  

Do you have any way of reading error codes from the diagnostic port? Like a Foxwell NT530, or ISTA with an ENET cable? It doesn't say in the instructions above how long to hold the button, and I have never actually reset mine. Maybe you need to hold it down for 30 seconds or something. I use ISTA to reset my service intervals, but some other code readers can do that also (like the Foxwell NT530). Maybe you need to hold the button down while the engine is off, and while still pressing the button, start the engine to reset the odometer?  

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