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Actual steps for using Mitsui's Carshares via Rakuten CarShare

Actual steps for using Mitsui's Carshares via Rakuten CarShare

From March 2025, Mitsui's Carshares became available on Rakuten CarShare.

Unlike 'Orix CarShare' and 'Careco' which have traditionally been available on Rakuten CarShare, 'Mitsui's Carshares' does not require electronic key registration for first-time users.

Wondering 'How do I unlock and lock it then?', I actually tried renting one, so I'll introduce the steps I took.

The steps for using Orix CarShare with Rakuten CarShare are introduced here.

Table of Contents

Booking

First, access Rakuten CarShare and make a reservation.

Select the date, time, and area, then 'Search'.

Rakuten CarShare Find a Car

This time, I'm renting this new Sienta.

Rakuten CarShare Mitsui's Carshares New Sienta

By the way, it says 'Bicycles allowed' here.

Rakuten CarShare Mitsui's Carshares New Sienta

In this case, it seems you can park your bicycle behind the wheel stop.

That's really great, isn't it!

Stations where you can come by bicycle - Mitsui's Carshares (formerly Careco)

Enter your reservation details and tap 'Next'.

Rakuten CarShare Reservation Information Entry

Confirm your reservation details and tap 'Confirm Reservation'.

Rakuten CarShare Reservation Details Confirmation

This completes your reservation.

Let's check the reservation details.

Tap 'Reservation Info' in the menu.

Rakuten CarShare Reservation Info

Tap the relevant 'Reservation Confirmation'.

Rakuten CarShare Reservation Confirmation

Then, there's a 'Start Usage' button, though it's not yet tappable.

Rakuten CarShare

This button only appears for Mitsui's Carshares, and it becomes tappable 10 minutes before the scheduled start time.

Tapping this button unlocks the car.

How to Unlock

Now, let's get in.

If no one has rented it immediately before you, with Mitsui's Carshares, you can get in 10 minutes before your reserved time. This period is not charged, so it's a bit of a bonus.

How many minutes before the scheduled start time can I pick up the car?

Let's move the pylon in front of the car.

Mitsui's Carshares New Sienta

At stations marked 'Bicycles allowed', you can park your bicycle here. Details here

Mitsui's Carshares Bicycles Allowed

10 minutes before the scheduled start time, open the reservation confirmation screen and tap 'Start Usage'.

Mitsui's Carshares Start Usage

Tap 'Start Usage'.

Mitsui's Carshares Start Usage

Then, there was a 'clunk' sound, and the car was unlocked.

The screen will look like this.

Mitsui's Carshares Rakuten CarShare Usage started, you can now use the car.

The button changed to 'End Usage'.

Mitsui's Carshares End Usage

Get into the car, and in the passenger-side glove compartment, you'll find the car key. Turn it to 'Lend' and pull it out.

Mitsui's Carshares Passenger-side glove compartment Key

If you need to get in and out of the car during your usage, use this car key to unlock and lock it.

You only turn this when you start and return the carshare.

Inside the blue file in the photo, there was also a refueling card.

Once you've taken the car out, block off the parking space with the pylon.

How to Lock

Here's how to lock the car after use.

Once you've returned the car to the station,

Insert the key into the passenger-side glove compartment and turn it to 'Return'.

Mitsui's Carshares Passenger-side glove compartment Key

Check for any forgotten items and exit the car.

From the reservation confirmation screen, tap 'End Usage'.

Rakuten CarShare Mitsui's Carshares End Usage

Tap 'End Usage'.

Rakuten CarShare Mitsui's Carshares End Usage

'clunk' sound, and the car was locked.

The screen will look like this, and a return confirmation email was also received from Rakuten CarShare.

Rakuten CarShare Mitsui's Carshares Return completed.

How to Refuel

How to Refuel 【Rakuten CarShare】

For refueling, use the refueling card (AMS card) found inside the blue file in the passenger-side glove compartment.

Mitsui's Carshares Passenger-side glove compartment Key

You can refuel at the following gas stations:

  • ENEOS
  • Cosmo Oil
  • Showa Shell Sekiyu
  • Esso
  • Mobil
  • General

If it's not a self-service station, just hand the card to the attendant.

For self-service, simply insert the card, and the fuel type selection screen will automatically appear.

For Mitsui's Carshares, it seems there's no need to leave the receipt in the car. (As it's not specifically stated)

For Orix CarShare, it states that receipts should be placed in the sun visor.

How to Refuel 【Rakuten CarShare】

Summary

  • Unlocking and locking can be done via buttons on the reservation confirmation screen. (No prior key registration required)
  • At stations marked 'Bicycles allowed', you can park your bicycle behind the wheel stop.
  • The refueling card (AMS card) was in the glove compartment.
  • No need to leave the receipt in the car when refueling.

While the usage fees and mileage charges are slightly higher than Orix CarShare, I think it's good because there are many stations and many new car models.

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