BMW F30/F32 Display & Navigation Upgrade Guide｜NBT Cars, No Coding Required (2012-2016)
BMW 3 Series (F30) and 4 Series (F32), 2012–2016, fitted with the NBT system. Replacing the factory display and navigation with a larger, more capable unit. The displays and navigation units BIMMER+ supplies are plug-and-play — no coding, no modification to the car. This guide walks through the whole job, from removing the interior trim to connecting the wiring and checking that everything works, with the points people trip over along the way.
Before you start｜Plug-and-play means it isn't hard
When people hear "display and navigation replacement," they often brace for coding (changing the car's computer settings) or cutting into the wiring. BIMMER+ units connect straight to the factory connectors — genuine plug-and-play. No vehicle coding, and no modification to wiring or panels. Remove the factory parts, connect using the supplied harness, put everything back. That's the whole job. With the right tools and the right order of work, this is well within reach as a DIY install.
Preparation and tools
- Plastic trim removal tools｜Essential for lifting the dashboard and trim without marking them. Avoid metal tools, which damage paint and panels.
- Torx drivers｜Sized for BMW interior fasteners. A set is worth having, since sizes vary.
- A tray for the screws｜Keep the screws you remove sorted by step, so nothing gets mixed up on the way back together.
Installation
Removing the air vent trim
Using a trim tool, work the large plastic trim around the hazard light button free.
It's held by clips, so the trick is to apply even pressure and pull straight towards you so nothing breaks. Concentrating force on one spot is what snaps clips.
Removing the control panels
Remove the four screws holding the climate control and audio control panels.
Draw the panels carefully towards you, far enough that there's no strain on the connectors behind them. Pulling hard will damage the wiring, so give yourself slack and take your time.
Removing the factory navigation unit (NBT)
Remove the two screws securing the navigation unit in the centre console.
Slide the unit out slowly. There is wiring connected at the back — do not force it. If it resists, ease it forward a little at a time rather than pulling hard.
Removing the factory screen
Remove the two screws holding the factory screen at the top of the dashboard.
Unplug the connector at the back and lift the screen away.
Wiring and connectors (the critical part)
This is the heart of the install. The design is plug-and-play so no modification is needed, but a connector left unplugged or not fully seated is the single biggest cause of problems. Work through them one at a time.
Quadlock connector: Connect the large connector on the new harness to the back of the factory navigation unit.
Moving the fibre optics: If the factory connector has fibre optic cables (two thin leads), transfer them to the connector on the new harness. Forget this and you may get no sound at all. It's easy to miss, so check it.
LVDS cable: Connect the LVDS cable (video) from the navigation unit to the new screen.
AUX connection: For audio output, connect the supplied AUX cable to the car's AUX input.
Testing and reassembly
Power test: Before you tighten any screws, start the engine and confirm the screen boots normally. Discovering a fault after the panels are back on means doing the job twice, so always check first.
Function test: Confirm that touch input, the iDrive controller and the steering wheel switches all work. Since no coding is required, if it all responds you're ready to go.
Reassembly: Once you're satisfied, refit the navigation unit while taking care not to trap any cables, then reinstall the panels and trim in reverse order. Finally, check that every trim clip is properly engaged.
Frequently asked questions
Is coding really not required?
Correct. The units BIMMER+ supplies for these cars are plug-and-play, so no coding or configuration change is needed on the vehicle. Connect to the factory connectors, wire in using the supplied harness, and it works.
Does the car need to be modified — cutting wires, for example?
No. The wiring either taps into the factory connectors or connects via the supplied harness, so nothing on the car needs to be cut or drilled. The install is fully reversible.
How long does it take?
From removing the trim through testing and reassembly, expect one to two hours if you're comfortable with this kind of work. If it's your first time, take each step at your own pace — and take particular care over the wiring.
I'm not confident fitting it myself.
Then don't force it. If you're unsure about removing interior trim or connecting wiring, you can use the BIMMER+ on-site installation service and have it fitted properly and safely.
Not confident fitting it?｜On-Site Cluster Installation Service
"I'd rather not take the dash apart." "I want it done properly." For exactly those cases, BIMMER+ offers an on-site installation service covering the greater Tokyo area. Labour plus a call-out fee by region — we come to your home or another location of your choosing and fit it correctly. Pricing, coverage and booking are on the dedicated page.
Book on-site installation →This guide describes the general installation process. Connector shapes and some steps may differ depending on model year, trim and equipment. Carry out the work at your own risk, and if you have any doubts, use a specialist workshop or the BIMMER+ on-site installation service.
No modification or coding of the vehicle is required, but take care not to break panels or clips when removing interior trim.
BIMMER+ is an independent aftermarket brand and is not affiliated with BMW AG. BMW is a registered trademark of BMW AG.
