Control units and comfort electronics Opel: problems by model and engine

Documented faults, from most to least important

Severity × frequency. Below each one, the Opel models it appears in.

- Medium severityFrequency: CommonOpel Vectra CInstrument cluster and CIM electronic module faultsThe Vectra C's instrument cluster can fail because of a connector problem, and the CIM electronic module, which manages several functions of the car, is responsible for various electronic faults, according to gebrauchtwagenberater.de; fiches-auto.fr adds warning lights that come on for no reason and a trip computer showing incorrect data.
- Medium severityFrequency: OccasionalOpel AdamElectronic control unit (BCM), immobiliser, remote key and parking sensor faultsAccording to the owner reports collected by fiches-auto.fr, there are 8 cases of electronic faults on the Adam: immobiliser, remote key, on-board computer, parking sensors and blind spot alert. The listing attributes them to the body control module (BCM) and the wiring. There is no known recall.
- High severityFrequency: RareOpel Insignia BMoisture in the central locking control unit (2018 campaign)A 2018 campaign covers Insignia Bs built between February 2017 and March 2018: poor sealing at the A-pillar lets moisture into the central locking control unit, with a risk of short circuit and fire.
- Medium severityFrequency: RareOpel Insignia BWater ingress into electronic modules and rear light unitsTwo testimonials on fiches-auto.fr describe water ingress: into an electronic module on a 2.0 Turbo (70,000 km, 2020, with the alarm and starting affected) and into the rear light units of a 2.0 diesel.

By Opel model

Open yours to see only the faults that affect it, by engine and by year.

Frequently asked questions

What faults with the control units do Opel cars have?

In 3 models from Opel there are 4 documented faults with the control units. The most important: instrument cluster and CIM electronic module faults, electronic control unit (BCM), immobiliser, remote key and parking sensor faults and moisture in the central locking control unit (2018 campaign). Each fault has its own page with the affected years and versions, the symptoms and the repair cost.

Which Opel models have the most problems with the control units?

Opel Insignia B (2 faults), Opel Vectra C (1 fault) and Opel Adam (1 fault).