Vauxhall Astra Astra H 1.7 CDTi 100bhp — Electric Window Regulator Cable Failure
The cables inside the electric window regulator mechanism fray and snap, causing the window glass to drop into the door frame.
Severity
MinorDIY Difficulty
Moderate
Est. Cost
£100–£200
OBD Codes
None
Symptoms
- Grinding or crunching noise when operating the window switch
- Window glass drops down into the door and won't come up
- Window sits crooked in the frame
Root Cause
The steel cables run over plastic pulleys. The plastic pulleys degrade and crack, or the cable frays and tangles inside the motor drum.
How To Fix
- Remove the interior door card to access the regulator.
- Tape the window glass 'up' temporarily to secure the vehicle.
- Replace the entire window regulator mechanism (usually supplied without the motor).
- Cost: £100-200
Estimated Repair Costs
| Repair Option | Est. Cost (GBP) |
|---|---|
| DIY (parts only) | £40–£80 |
| Independent Garage | £100–£200 |
| Main Dealership | £160–£320 |
Other Faults on This Variant
EGR Valve Failure
ModerateThe Isuzu-sourced Z17DTH and Z17DTJ engines in the Astra H have a well-documented EGR valve failure. Carbon deposits cause the valve to stick, resulting in power loss and increased emissions.
DPF Blockage
ModerateDPF-equipped Astra H 1.7 CDTi models (post-2007) suffer from the same DPF blockage issues as most diesel Vauxhalls of this era. Urban use is the root cause.
Dual Mass Flywheel Failure
ModerateDMF wear on the Astra H 1.7 CDTi is a high-mileage inevitability. The flywheel's internal dampers lose effectiveness, causing vibration and judder that makes the car unpleasant to drive.
Disclaimer: Repair cost estimates are indicative and based on community data. Always get a quote from a qualified mechanic before proceeding with any repair.