Adding Options to your 2nd Generation Prius

ScanGauge-II (made by Linear-Logic) - there are many threads about the SG-IIs here on PriusChat, and Linear-Logic's Customer-Support is second to none! - Good Luck!

Edit: Sorry, I should have read your post more thoroughly, but I thought you were just looking for useful add-ons, well I have 2 SG-IIs and have found them to be incredibly useful!)

 

It can be kind of a pain to add original options that the car wasn't built with. You can find pretty much everything you need to know about them in the wiring diagram (more info), but another thing you'll often find is that Toyota did use variant wire harnesses lacking the wires for options that weren't in the factory build, and finding missing wire harnesses economically can be a challenge. They often get mercilessly hacked up in salvage cars.

 

installing the factory nav and Bluetooth, etc. would be a huge job that requires hardware and rewiring the car. it would be fairly easy to replace the head unit with an aftermarket unit that had many of those features you want, and would need a lot less wiring and $$. I had a kenwood in my '05 that had Bluetooth audio, touchscreen, nav and satellite radio and a bunch of other stuff. it was worth it even if you don't care about the way better sound.

 

I heartily second what @69shovlhed said. Look, an '08 Prius is never going to be on the lawn at Pebble Beach, no future buyer of your car will care if it is 100% OEM, Compared to even the cheapest modern unit, 2008-spec Bluetooth (no audio streaming! Phone only!) and SATNAV are pretty much crap.

 

It currently being 2019, the G2 Prius has existed for 15 years. Thousands, if not tens of thousands of G2s have had aftermarket radios installed by now. It's certainly not brain surgery.

As for brands, I'm a fan of the Excelon line from Kenwood. Pick the features you want and the price you can pay. Crutchfield has been selling radios since the 70s and their website is a great place to shop.

 

its an easy upgrade. I bought a scosche mounting kit that fits the head unit well, and some bezels to fill the gaps so it looked ok too.
it worked out really good. I wish I didn't have the jbl system in my '06 because then I'd have moved the upgraded system from the '04, but it is a pita to bypass the jbl.

 

Backup camera needs extra wiring and MFD with backup cam function. The lowest package doesn't come with it.
Bluetooth hand-free calling needs MFD with built-in bluetooth motherboard support, "Q7" ceiling console unit with built-in mic board or self-made mic connection to MFD and extra mic and signal wires in front of driver air vent tube to MFD. Coming with JBL audio package, it has amp and different wiring assembly all the way from dashboard to carpet.

It is kind of big project to remove and replace the whole wiring assembly.

 

Caravan can you elaborate on where the extra mic and signal wires in front of driver air vent tube to MFD go?

 

From the left side with red green brown wire plug then go way down with wire assembly to MFD.

 

I did a head unit upgrade but lost few options. My car was 06 japanese import RHD with few extra features like Intelligent Parking Assist. That is nomore working. Additionally, I ve lost the feedback sound and voice recognition along with bluetooth audio. It seems that speaker is disconnected from main system otherwise car is giving feedback sound and Bluetooth voice output but it can't reach driver side speaker. Head unit upgrade would have been awesome if I haven't lost IPA and Driver side speaker feedback sound. Anyone having any idea howcan I get these integrated?

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