KNOWN FAULT · Jeep

Heated or ventilated rear seats stop working, with a warning light (2026 Jeep Grand Cherokee)

Sources are not verified in real time and no entry confirms that your car is affected.

Engine / equipment: Jeep Grand Cherokee (WL) with 3- or 4-zone climate control
Period mentioned: 2026 (US model years), built up to 16/7/2026
Symptoms: The heated or ventilated rear seats stop working and their button does not light up; the engine warning light comes on.
Possible cause described: The climate control (HVAC) module software, which stores code B1148-2A (left rear heated seat switch stuck). Stellantis reprograms the module (bulletin 08-279-26).
Check for the garage: Ask the dealer to read code B1148-2A and reprogram the climate control module according to bulletin 08-279-26.
Cost cited in the source: No verified estimate; ask the garage for a quote.A rough figure from the original database, not an up-to-date quote.

Sources from the original database

Anonymous answer, no personal data.

How much does it cost to repair this fault?

No verified estimate; ask the garage for a quote.

A rough figure from the original database, not an up-to-date quote.

How is it checked?

Ask the dealer to read code B1148-2A and reprogram the climate control module according to bulletin 08-279-26.

What are the symptoms?

The heated or ventilated rear seats stop working and their button does not light up; the engine warning light comes on.

Which cars and years does it affect?

Brands: Jeep
Engine / equipment: Jeep Grand Cherokee (WL) with 3- or 4-zone climate control
Period mentioned: 2026 (US model years), built up to 16/7/2026

Which fault codes appear?

Find garages near you and, before you say yes, check whether the quote is reasonable.

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