Cars encountering 'Differential fault' or 'Steering Malfunction' after S3 installation


Explanation: Dual Clutch Support Mode is actually reversed now. So it means if you are seeing differential error, you need to 'disable' the dual clutch support contrary to what it says in the manual. (Affected to all S3 units shipped prior to March, 2021)

This will be fixed later and we will change dual clutch support mode wording to 'CANBUS debug mode = Enable/disable'.

Once again thank you for the member who found this and we are sorry for this confusion.

Important Notice

DHL Hong Kong informed us today that they have suspended 0.5-5kg delivery services for European routes. We are in the process of attempting to change it to Fedex in order to provide the best experience for our customers.

All orders destined for Germany using Fedex are required to provide consignee's Tax ID. Please contact us if you have already placed your order and your order has not shipped.

At this time, RSNAV reserves the right to change shipping methods at its discretion to ensure a safe and successful delivery to you. We are making every effort to minimize any unexpected changes, but due to current worldwide shipping challenges, your shipping may take longer or additional payment may be required.

For France, If you choose YUN express, credit card transaction or PayPal transaction, a receipt is required to be provided for Direction générale des douanes et droits indirects. In this case, we need to report the full value. As of 2021, many European destinations are moving towards a customs policy similar to France. In particular, YUN Express will be affected by this. RSNAV will try to work through this with your best interest in mind, but we are required to observe laws and regulations. We would like to remind you that Taxes and Duties are entirely the responsibility of the buyer and their local government laws and RSNAV does not have any control over it.

New coin holder replacement MMI knob for Concert/Symphony radio systems will be included by default effective January 22, 2021. Including this new control knob by default, meant a slight price adjustment to reflect the additional costs of adding the new feature.

Along with this new hardware feature, sound output is now through the 3.5mm style aux output and you will now need to plug the 3.5mm audio plug into your aux port. These are located in either the centre armrest or the glove compartment MMI port using 'AUX to AMI adaptor cable'. (The installation manual will be updated shortly to reflect these new instructions)

For RSNAV S2, S3 Android system installation and technical questions , please write to

This new e-mail address is meant to answer frequently asked questions within 24 hours from the receipt. If required, your questions sent to this address will be escalated onto Daniel KIM, Chief of Operations.

The S3 12.3" display has been updated to the modern rounded corners as shown on the unit in the image below. This change is effective as of January 15, 2021.

Looking for fast help from other RSNAV users, want to help others? Please join our user community! The link to the dedicated Facebook group is in the left menu. is operated by a very small team of dedicated staff. Despite our small team, we are in the process of growing our team to be able to help you quicker and more efficiently. Due to the popularity of our products we are experiencing a growth that is proving challenging to keep up with. Please be patient as we grow to better server you in the future.

We highly recommend joining the RSNAV group in Facebook, where Daniel monitors posts and questions on a frequent basis, even when outside of his office. Being a user community, there are also a growing number of RSNAV users that are very eager to help others.

Do not message Daniel or the RSNAV page using Facebook Messenger. It is NOT monitored and questions posted through messenger will not be read or answered. Please refer to the Contact Us page for the most appropriate email address to send your questions to.

Thank you, the RSNAV team.

Frequently Asked Questions

How fast are products shipped? Why isn't my tracking number working yet?

Currently, RSNAV factories are sending out orders in the same day or 48 hours later at the latest, but the current worldwide logistics capacity is worsening due to COVID.

Estimated delivery is currently taking 2.5 ~ 3 weeks for the S3 models, and up to 2 weeks for the standalone system.

At this time, the average waiting period with DHL is between 7 to 14 days. This means that for at least 7 business days your tracking number will be shown as 'Not yet picked up'. This is beyond our control, until such time as the worldwide shipping companies are able to increase their capacity. reserves the right to cancel a device registration if payment is cancelled or declined after shipping its products to a customer.

For example, if you file a chargeback, will cancel your device registration. This will result in the device functionality being suspended. Once the device has been suspended, Every 5 minutes, an 'inactivation warning' will appear on the screen on the affected RSNAV Android device. For Standalone devices, there will be a limited functionality until the required payment information has been provided to will not reinstate any device that has not been properly and fully paid for.

There is no way to retain a fully working RSNAV device without paying for it properly and in full. Any attempt to short pay, or steal the product from will be met with a quick response. We will pursue all attempts to defraud RSNAV.


last revised July, 14th, 2020