Not sure if Pilgrim's comment was directed at my post, but in any case, I said I had purchased a 2014, so the warranty will not be voided by towing the rig I described. The following is from the 2014 Murano owner's manual, section 9-19. You may wish to compare your statement about what constitutes the 3500 lb capacity with what the manual says. If I'm reading your statement and that from the manual correctly, they seem not to agree. Simple as that ?
(Mod note: the following excerpt is edited for readability)
....required to achieve the rating. Additional passengers, cargo and/or optional equipment, such as the trailer hitch, will add weight to the vehicle
and reduce your vehicle’s maximum towing capacity and trailer tongue load. The vehicle and trailer need to be weighed to confirm the vehicle is within the GVWR, Front GAWR, Rear GAWR, Gross Combined Weight Rating (GCWR) and Towing capacity.
All vehicle and trailer weights can be measured using platform type scales commonly found at truck stops, highway weigh stations, building
supply centers or salvage yards.
To determine the available payload capacity for tongue load, use the following procedure.
1. Locate the GVWR on the F.M.V.S.S./C.M.V. S.S. certification label.
2. Weigh your vehicle on the scale with all of the passengers and cargo that are normally in the vehicle when towing a trailer.
3. Subtract the actual vehicle weight from the GVWR. The remaining amount is the available maximum tongue load.
To determine the available towing capacity, use the following procedure.
1. Find the GCWR for your vehicle on the “Towing Load/Specification” chart found later in this section.
2. Subtract the actual vehicle weight from the GCWR. The remaining amount is the available maximum towing capacity.
To determine the Gross Trailer Weight, weigh your trailer on a scale with all equipment and cargo, that are normally in the trailer when it is towed. Make sure the Gross trailer weight is not more than the Gross Trailer Weight Rating shown on the trailer and is not more than the calculated available maximum towing capacity.
Also weigh the front and rear axles on the scale to make sure the Front Gross Axle Weight and Rear Gross AxleWeight are not more than Front Gross Axle Weight and Rear Gross Axle Weight on the F.M.V.S.S./C.M.V.S.S. certification label.
The cargo in the trailer and vehicle may need to be moved or removed to meet the specified ratings.
Example: on a scale - including passengers, cargo and hitch - 4,926 lb. (2,234 kg).
F.M.V.S.S./C.M.V.S.S. certification label - 5,263 lb. (2,387 kg).
from “Towing Load/Specification” chart - 8,300 lb. (3,765 kg).
Load/Specification” chart - 3,500 lb. (1,588 kg). = 337 lb. (152 kg)
Available for tongue weight 8,300 lb. (3,765 kg) GCWR = 3,374 lb. (1,530 kg)
Capacity available for towing 337 lb. (152 kg) / Available tongue weight 3,374 lb. (1,530 kg) Available capacity = 10 % tongue weight
The available towing capacity may be less than the maximum towing capacity due to the passenger and cargo load in the vehicle.
Remember to keep trailer tongue weight between 10 to 15% of the trailer weight. If the tongue load becomes excessive, rearrange the cargo to obtain the proper tongue load. Do not exceed the 10 to 15% tongue weight specification even if the calculated available tongue weight is greater than 15%. If the calculated tongue weight is less than 10%, reduce the total trailer weight to match the available tongue weight.