What is OEM number A-246-870-05-58 and which part does it identify?

OEM number A-246-870-05-58 identifies the bonnet lock for the Mercedes-Benz compact vehicle range, encompassing the A-Class (W176), B-Class (W246, W242), CLA Coupé (C117, X117), GLA-Class (X156), and Vito/Metris (V447), built across the period 2011–2021. The part is a combined front bonnet latch and limit-switch assembly mounted at the centre of the front crossmember; the integral limit switch signals the instrument cluster when the bonnet is open or improperly latched. It is also known as a hood lock or bonnet latch. The cross-reference for this number in spaced Mercedes-Benz notation is A 246 870 05 58. OEM number A-246-870-05-58 may fit additional vehicle models not listed here — always verify against the OEM number on your existing part.

Does OEM number A-246-870-05-58 fit my vehicle?

OEM number A-246-870-05-58 fits the Mercedes-Benz B-Class Sports Tourer (W246, W242), built between 2011 and 2018, and the CLA 250 Coupé (C117), built between 2014 and 2019. Search results further confirm fitment for the Mercedes-Benz B 250 e (W242, Electric Drive) 2016–2017, CLA 250 (C117) 2014–2019, GLA 250 (X156) 2015–2020, and Metris (V447) 2016–2021. The part is also listed against the A-Class (W176) and has been recovered from W176 vehicles.

No side (left-hand/right-hand) constraint governs fitment — the bonnet lock is a centrally mounted, single-unit assembly. The part is described as the right engine hood catch latch in some catalogue entries, referring to the orientation of the release lever mechanism rather than a vehicle-side split. No finish suffix, software suffix, or Keyless Entry Start Stop and Exit (KESSY) gating variable has been identified. The part fits diesel, petrol, and full-electric variants of the covered platforms without distinction.

The GLA-Class (X156) fitment spans the full production run from 2013 through to 2022 according to parts cross-reference data.

OEM number A-246-870-05-58 may fit additional vehicle models not listed here. Always verify by checking the OEM number printed on your existing part.

Fits: Mercedes-Benz A-Class (W176) 2012–2018; B-Class Sports Tourer (W246, W242) 2011–2018 (all engines, including Electric Drive); CLA Coupé/Shooting Brake (C117, X117) 2013–2019; GLA-Class (X156) 2013–2020; Vito/Metris (V447) 2016–2021 — centrally mounted single unit, no left/right split, no KESSY gating, all fuel types
Does not fit: B-Class W245 (preceding generation); CLA (C118, second generation from 2019); GLA (H247, second generation from 2020)

When should OEM number A-246-870-05-58 be replaced?

Replacement triggers

• Bonnet fails to release when the interior pull handle is operated.
• Bonnet does not close flush and requires repeated pressing to engage the latch.
• Bonnet-open warning light or message remains illuminated on the instrument cluster after the bonnet is fully closed.
• Audible rattling or movement of the bonnet at speed, indicating incomplete latch engagement.
• Visible dirt, debris, or corrosion on the latch mechanism preventing full engagement of the striker.
• Rust or seizure in the latch mechanism that prevents normal operation of the release cable.

Typical lifespan

The bonnet lock is designed to last the lifetime of the vehicle; there is no scheduled replacement interval. Dirt accumulation, debris ingress, or corrosion — particularly in regions with salted roads or high humidity — can shorten the service life of the latch and its integral limit switch. Vehicles used frequently in urban stop-start conditions, where the bonnet is opened regularly for top-ups and inspections, may experience faster wear of the latch pawl and return spring.

We used AI to help write this text. We regularly check the information - but cannot guarantee that all data is accurate.