Sometimes systems break or malfunction. Faulty modules used in Nissan Intelligent Safety Shield Automatic Emergency Braking systems are not working properly on Nissan Sentras and possibly other Nissan models such as the Nissan Altima, Armanda or Murano.
The problem apparently is caused by a radar module in the front grill supplied by Bosch. New Sentra owners are getting warning error messages, “Front radar unavailable due to obstruction.” when the module is not covered. The Bosch component deactivates and disables both cruise control and emergency braking.
Nissan told Digital Trends that it is aware of a relatively limited population of Sentra customers who are reporting the problem and it’s engineering team has identified the cause to be a supplied-component issue. Nissan is working on finding a solution and getting it to their dealers for replacement. Apparently it is Bosch Radar sensor make in Hungary for Nissan part number (28438-5UD2A) that has a MSRP of $753.67 which can also be found in Nissan Sentras going back to 2016.
A similar model sensor is found on the 2018 Nisan Murano, Nissan Altima, Murano, Pathfinder and Leaf.
The problem with a faulty AEB sensors is that most consumers have no way of checking if automatic emergency braking system is working. It is most likely a newly identified flaw. Nissan notes that the problem does not effect driving ability. Nissan also notes that the warning it doing its job, and critical safety systems are not affected.
The 2019 Nissan Sentra, went on sale starting August 14 at Nissan dealers nationwide. For the 2019 model year, all Sentra grades (except Sentra S) receive standard NissanConnect with Apple CarPlay and Android Auto. AEB is standrad on all Nissan Sentras with Xtronic transmissions.
Nissan Safety Shield 360, a suite of active safety technologies, will first be available on the all-new 2019 Altima and 2019 Rogue – both on sale this fall.
Using radar technology to keep an eye on your speed and proximity to the vehicle ahead, AEB (formerly Forward Emergency Braking) gives you audio and visual display warnings to help you reduce your speed if necessary. If a collision is unavoidable, this feature will engage the brakes to help reduce both the speed of the impact and the severity of a collision.