Coolant level drops in the low-temperature circuit of the E-Tech 200: leaking air/water heat exchanger

Engine / equipment

E-Tech full hybrid 200 (1.2 turbo three-cylinder H5F): Renault Austral and Espace

Period mentioned

2022–2023

Symptoms

The message «injection à contrôler» (check injection) and a falling level in the expansion tank of the low-temperature circuit, with no visible leak.

Possible cause described

According to L'argus (August 2024), on H5F engines with index 600 or 601 built up to 31/12/2023 the air/water heat exchanger (the one that cools the turbo intake air with liquid) leaks coolant.

Check for the garage

The garage first looks for leaks around the whole cooling system; if it finds none, it replaces the air/water heat exchanger. In the meantime, watch the level in the low-temperature tank.

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