Nissan Qashqai J11 1.5 dCi 110bhp — Front Radar / Anti-Collision Sensor Failure
The front radar sensor (used for emergency braking) is poorly sealed and highly vulnerable to water ingress and stone chips, causing the entire safety system to shut down.
Severity
MinorDIY Difficulty
Professional Only
Est. Cost
£600–£800
OBD Codes
None
Brakes
Typical layout and location for the Brakes assembly.
Symptoms
- Constant 'Front Radar Unavailable' warning message
- Cruise control stops working entirely
- Autonomous Emergency Braking disabled
Root Cause
The sensor sits directly behind the front Nissan badge. Condensation builds up inside the unit, shorting the circuit board.
How To Fix
- Check the sensor behind the badge. If the bracket is bent, it can simply be realigned and recalibrated.
- If water damaged, a new radar unit is required (£400-600).
- MUST be calibrated by a dealer or ADAS specialist after fitting.
- Cost fitted and calibrated: £600-800
Estimated Repair Costs
| Repair Option | Est. Cost (GBP) |
|---|---|
| DIY (parts only) | £240–£320 |
| Independent Garage | £600–£800 |
| Main Dealership | £960–£1280 |
Other Faults on This Variant
Electronic Parking Brake (EPB) Motor Failure
SevereThe electronic parking brake actuators on the rear brake calipers frequently seize or burn out, leaving the handbrake stuck on or refusing to engage.
DPF Pressure Sensor Pipe Split
ModerateA tiny rubber hose connecting the DPF to the exhaust pressure sensor splits frequently, causing limp mode and preventing DPF regeneration.
NissanConnect Infotainment Boot Loop
MinorThe NissanConnect touch screen system frequently freezes on the Nissan logo and reboot loops constantly, draining the battery if left.
Disclaimer: Repair cost estimates are indicative and based on community data. Always get a quote from a qualified mechanic before proceeding with any repair.